#include <bits/stdc++.h>
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define all(x) x.begin(), x.end()
using namespace std;
using ll=long long;
using ld=long double;
using P=pair<ll,ll>;
#include <atcoder/all>
using namespace atcoder;
//using mint=static_modint<998244353>;
using mint=static_modint<1000000007>;
////using mint=modint;
//#pragma GCC target("avx2")
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")

int inf=2147483647;
ll INF=9223372036854775807;
const ld PI=acos(-1);

void yn(bool f){
	if(f)cout<<"Yes"<<endl;
	else cout<<"No"<<endl;
	return;
}

ll n,m;

bool in(int x,int y){
	if(x<0||n<=x)return false;
	if(y<0||m<=y)return false;
	return true;
}

vector<int> dx={1,-1,0,0};
vector<int> dy={0,0,1,-1};

bool isp(string s){
	rep(i,s.size())if(s[i]!=s[s.size()-1-i])return false;
	return true;
}

void solve(){
	ll n,k,x;cin>>n>>k>>x;
	vector<ll> h(n);
	rep(i,n)cin>>h[i];
	sort(all(h));
	reverse(all(h));

	ll ma=h[0];
	ll ans=0;

	for(int i=1;i<n;i++){
		if((h[0]-h[1])%x!=0){
			cout<<"No"<<endl;
			return;
		}
		ans+=(h[0]-h[i])/x;
	}

	if(n%k!=0){
		cout<<"Yes"<<endl;
		return;
	}

	if(n%k==0){
		if(ans%k==0){
			cout<<"Yes"<<endl;
			return;
		}
	}

	cout<<"No"<<endl;
}

int main(){
	ll t;cin>>t;
	rep(i,t)solve();
}