#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int inf = 1e9 + 7;
const ll infll = 1e18;
template<typename T>
istream &operator>>(istream &is, vector<T> &a) {
for (auto &i : a) {
is >> i;
}
return is;
}
vector<vector<pair<int, int>>> g;
vector<vector<pair<int, int>>> seg;
int r = inf;
int cnt = 0;
void dfs(int v, int p = -1) {
++cnt;
for (auto [u, i] : g[v]) {
if (u != p) {
auto it = lower_bound(seg[i].begin(), seg[i].end(), pair{r, inf});
if (it != seg[i].begin()) {
int was = r;
r = min(r, prev(it)->second);
dfs(u, v);
r = was;
}
}
}
}
int32_t main() {
#ifdef LOCAL
freopen("/tmp/input.txt", "r", stdin);
#else
ios::sync_with_stdio(false);
cin.tie(nullptr);
#endif
int n, m, q;
cin >> n >> m >> q;
g.resize(n);
for (int i = 0; i < n - 1; ++i) {
int u, v;
cin >> u >> v;
--u, --v;
g[u].push_back({v, i});
g[v].push_back({u, i});
}
seg.resize(n - 1);
for (int i = 0; i < m; ++i) {
int e;
cin >> e;
--e;
if (seg[e].empty() || seg[e].back().second != m - 1) {
seg[e].push_back({i, m - 1});
} else {
seg[e].back().second = i - 1;
}
}
while (q--) {
int v;
cin >> v;
--v;
r = inf;
cnt = 0;
dfs(v);
cout << cnt << "\n";
}
return 0;
}
