import sys
import numpy as np

input = sys.stdin.buffer.readline

MOD = 10 ** 9 + 7
modinv = lambda a, mod=MOD: pow(a, -1, mod)


def pow_matrix_mod(x, n, mod=MOD):
    x = x.astype(object)
    if not n:
        return np.eye(len(x), dtype=object)
    if n % 2 == 0:
        return pow_matrix_mod(x @ x % mod, n // 2) % mod
    else:
        return x @ pow_matrix_mod(x @ x % mod, (n - 1) // 2) % mod


N, M, K, P, Q = map(int, input().split())
pq = P * modinv(Q) % MOD
matr = np.array([[(1 - pq) % MOD, pq], [pq, (1 - pq) % MOD]], dtype=np.int64)
tea = 0
kitchen = 0
for _ in range(M):
    tea += int(input())
for _ in range(N - M):
    kitchen += int(input())
tea %= MOD
kitchen %= MOD
ans = (np.array([tea, kitchen]) @ pow_matrix_mod(matr, K))[0]
ans %= MOD
print(ans)