from types import GeneratorType

def bootstrap(f, stack=[]):
    def wrappedfunc(*args, **kwargs):
        if stack:
            return f(*args, **kwargs)
        to = f(*args, **kwargs)
        while True:
            if type(to) is GeneratorType:
                stack.append(to)
                to = next(to)
            else:
                stack.pop()
                if not stack:
                    break
                to = stack[-1].send(to)
        return to
    return wrappedfunc

@bootstrap
def dfs(n, p):
    for v in G[n]:
        if v == p:
            continue
        A[n] += yield dfs(v, n)
        A[n] %= K
    diff = (B[n]-A[n])%K
    A[n] += diff
    A[n] %= K
    yield diff

for _ in range(int(input())):
    N, M, K = map(int, input().split())
    G = [[] for _ in range(N)]
    for _ in range(M):
        u, v = map(int, input().split())
        u, v = u-1, v-1
        G[u].append(v)
        G[v].append(u)
    B = list(map(int, input().split()))

    A = [0]*N

    print("Yes" if dfs(0, -1) == 0 else "No")