import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		int T = s.nextInt();
		for (int t = 0; t < T; t++) {
			int n = s.nextInt();
			int m = s.nextInt();
			long k = s.nextInt();

			ArrayList<ArrayList<Integer>> list = new ArrayList<>();
			for (int i = 0; i < n; i++) {
				list.add(new ArrayList<>());
			}
			for (int i = 0; i < m; i++) {
				int u = s.nextInt()-1;
				int v = s.nextInt()-1;
				list.get(u).add(v);
				list.get(v).add(u);

			}
			long[] A = new long[n];
			long[] b = new long[n];
			for (int i = 0; i < n; i++) {
				b[i] = s.nextInt();
			}

			record a(int x, int y) {

			}
			ArrayList<a> a = new ArrayList<>();
			for (int i = 0; i < n; i++) {
				a.add(new a(list.get(i).size(), i));
			}
			boolean[] visited=new boolean[n];
			Collections.sort(a, (aa, bb) -> aa.x - bb.x);
			for (int i = 0; i < n; i++) {
				int j = a.get(i).y;
				visited[j]=true;
				ArrayList<Integer> l = list.get(j);
				for (int o = 0; o < l.size(); o++) {
					int p = l.get(o);
					if (visited[p]) {

					} else {
						A[p] += (b[j] - A[j] + k) % k;
						A[p]%=k;
						A[j] = b[j];
					}
				}
			}
			for (int i = 0; i < n; i++) {
				if (A[i] != b[i]) {
					System.out.println("No");
					return;
				}
			}
			System.out.println("Yes");
		}
	}
}