#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int mod=1e9+7;

ll sq(ll x){
	return (x*x)%mod;
}
ll bin(ll a,ll b){
	if(b==0)return 1;
	if(b&1){
		return (a*sq(bin(a,b>>1)))%mod;
	}
	return sq(bin(a,b>>1))%mod;
}

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	int t;
	cin>>t;
	while(t--){
		ll n,k,l;cin>>n>>k>>l;
		if(k%2 && l==2){	
			cout<<0<<endl;
			continue;
		}
		if(l<2){
			cout<<0<<endl;
			continue;
		}
		ll ans=l*(l-2);
		ans%=mod;
		ans*=bin(l-1,k-2);
		ans%=mod;
		if(k!=3)ans+=(l*bin(l-1,k-1))%mod,ans%=mod;
		if(n==1){
			cout<<ans<<endl;
			continue;
		}
		ll hnhn=(l-2)*(l-3);
		hnhn%=mod;
		hnhn+=(l-1)*2-1;
		hnhn%=mod;
		hnhn*=(n-1);
		hnhn%=mod;
		ans*=bin(hnhn,k);
		ans%=mod;
		cout<<ans<<endl;
	}
	return 0;
}