#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF
int n, m, q;
vector<pair<int, int>> edges;
vector<vector<int>> adj, up;
vector<int> depth, tin, tout, info, last, on;
int timer = 0;
struct FenwickTree {
int n;
vector<int> t;
FenwickTree() {}
FenwickTree(int n) : n(n), t(n) {}
void init(int n_) {
n = n_;
t.resize(n_);
}
int lsb(int x) {
return x & -x;
}
void update(int p, int x) {
while (p <= n) {
t[p] += x;
p += lsb(p);
}
}
int query(int p) {
int ans = 0;
while (p > 0) {
ans += t[p];
p -= lsb(p);
}
return ans;
}
} ft;
void dfs(int u, int p = -1) {
tin[u] = ++timer;
for (int i = 0; i + 1 < 20; i++) {
if (up[u][i] == -1) break;
up[u][i + 1] = up[up[u][i]][i];
}
for (int v : adj[u]) {
if (v == p) continue;
depth[v] = depth[u] + 1;
up[v][0] = u;
dfs(v, u);
}
tout[u] = timer;
}
int kpar(int u, int k) {
for (int i = 0; i < 20; i++) {
if (u == -1) break;
if (k & (1 << i)) u = up[u][i];
}
return u;
}
bool is_ancestor(int u, int v) {
// returns true if u is ancestor of v
return tin[u] <= tin[v] && tout[u] >= tout[v];
}
void solve() {
cin >> n >> m >> q;
edges.resize(n);
adj.resize(n + 1);
up.resize(n + 1, vector<int>(20, -1));
depth.resize(n + 1); tin.resize(n + 1); tout.resize(n + 1);
info.resize(n + 1, 1); on.resize(n + 1); last.resize(n + 1);
ft.init(n + 2);
for (int i = 1; i < n; i++) {
cin >> edges[i].first >> edges[i].second;
adj[edges[i].first].push_back(edges[i].second);
adj[edges[i].second].push_back(edges[i].first);
}
dfs(1);
while (m--) {
int d;
cin >> d;
auto [u, v] = edges[d];
if (depth[v] < depth[u]) swap(u, v);
if (on[v]) {
// cout << "[QRY] turning off " << u << " " << v << "\n";
on[v] = 0;
last[v] = info[v];
} else {
// cout << "[QRY] turning on " << u << " " << v << "\n";
on[v] = 1;
int new_info = info[u] + info[v] - last[v];
queue<pair<int, int>> q;
q.push({u, v});
q.push({v, u});
while (q.size()) {
auto [x, p] = q.front();
q.pop();
info[x] = new_info;
for (int y : adj[x]) {
if (y == p) continue;
int status = on[depth[x] > depth[y] ? x : y];
if (status == 1) {
q.push({y, x});
}
}
}
}
}
while (q--) {
int c;
cin >> c;
cout << info[c] << "\n";
}
}
int32_t main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
solve();
return 0;
}
