#include<bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,j,k) for(int i=(j);i<=(k);i++)
#define per(i,j,k) for(int i=(j);i>=(k);i--)
#define pb emplace_back
#define mp make_pair
#define fi first
#define se second
using vi=vector<int>;
using pi=pair<int,int>;

namespace IO{
	char buf[1<<26], *iS=buf;
	void init(){
		buf[ fread(buf, 1, 1<<26, stdin) ]=0;
	}
	#define getchar() (*iS++)
	int read(){
		int res=0;
		char ch=' ';
		do{
			ch=getchar();
		}while(!isdigit(ch));
		do{
			res=res*10+ch-48;
			ch=getchar();
		}while(isdigit(ch));
		return res;
	}
	#undef getchar
}
using IO::read;

const int mod=1e9+7, i2=(mod+1)/2;
int qpow(int x,int y=mod-2){
	int res=1;
	while(y){
		if(y%2) res=res*x%mod;
		x=x*x%mod;
		y/=2;
	}
	return res;
}

const int N=1e5+5;

int fac[N], ifac[N];
void init(){
	fac[0]=1;
	rep(i,1,N-1){
		fac[i]=fac[i-1]*i%mod;
	}
	ifac[N-1]=qpow(fac[N-1]);
	per(i,N-1,1){
		ifac[i-1]=ifac[i]*i%mod;
	}
}

void solve(){
	int n=read(), k=read();
	vector<vector<pi>> G(n+1);
	rep(i,1,n-1){
		int u=read(), v=read();
		G[u].pb(v, i);
		G[v].pb(u, i);
	}
	vector<bool> st(n+1);
	rep(i,1,k){
		int id=read();
		st[id]=1;
	}
	
	int ans0=1, ansx=1;
	rep(i,1,n){
		int c=G[i].size();
		if(c>1){
			(ans0*= fac[c-2] )%=mod;
		}
	}
	rep(i,1,n){
		int c=G[i].size();
		if(c>1){
			(ansx*= c-1 )%=mod;
		}
	}
	(ansx*= k )%=mod;

	vi f(n+1), g(n+1), h(n+1), ans(n+1);
	auto dfs=[&](auto self,int u,int p)->void {
		f[u]=1;
		for(auto [v,id]:G[u]){
			if(id!=p){
				self(self, v, id);
				ans[u]=(ans[u]*f[v] + ans[v]*f[u])%mod;
				h[u]=(h[u]*f[v] + g[u]*g[v] + (st[id]? g[u]*f[v]: 0))%mod;
				g[u]=(f[u]*g[v] + g[u]*f[v] + (st[id]? f[u]*f[v]: 0))%mod;
				f[u]=f[u]*f[v]%mod;
			}
		}
		int c=G[u].size();
		if(c>1){
			(f[u]*= c-1 )%=mod;
			(ans[u]*= c-1 )%=mod;
		}
		(ans[u]+= h[u] )%=mod;
		if(st[p]){
			(ans[u]+= g[u] )%=mod;
			g[u]=0;
		}
	};
	dfs(dfs, 1, 0);
	int Ans=(ansx-ans[1]+mod)%mod*ans0%mod;
	cout<< Ans <<'\n';
}
signed main(){
	assert(freopen("traverse.in","r",stdin));
	assert(freopen("traverse.out","w",stdout));
	ios::sync_with_stdio(0);cin.tie(0);

	IO::init();
	init();
	int tid=read(), t=read();
	while(t--){
		solve();
	}
}