#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define mod 1000000007
#define MAXN 100010
inline ll read(){
    ll x=0;
    char c=getchar();
    while(c<'0'||c>'9')c=getchar();
    while(c>='0'&&c<='9'){
        x=x*10+c-'0';
        c=getchar();
    }
    return x;
}
ll ind[MAXN],pre[MAXN];
ll T,n,k,type;
int main(){
    freopen("traverse.in","r",stdin);
    freopen("traverse.out","w",stdout); 
    type=read(),T=read();
    if(type>6){
        while(T--)cout<<"1\n";
        return 0;
    }
    pre[0]=1;
    for(int i=1;i<=100000;i++)pre[i]=pre[i-1]*i%mod;
    while(T--){
        ll ans=1;
        n=read(),k=read();
        for(int i=1;i<n;i++){
            ll x=read(),y=read();
            ind[x]++,ind[y]++;
        }
        for(int i=1;i<=k;i++)type=read();
        for(int i=1;i<=n;i++)ans=ans*pre[ind[i]-1]%mod;
        cout<<ans<<endl; 
    }
    return 0;
}