def aa(a,b,n):
    global p,q,mod
    res=[[0,0],[0,0]]
    res[0][0]=a;res[1][1]=b
    mat=[[0,0],[0,0]]
    a=p*pow(q,mod-2,mod)%mod
    mat[0][1]=a;mat[1][0]=a
    mat[1][1]=(1-a)%mod;mat[0][0]=mat[1][1]
    while n:
        if n&1:
            res=bb(res,mat)
        mat=bb(mat,mat);n>>=1
    return res

def bb(q,w):
    global mod
    res=[[0,0],[0,0]]
    for i in range(2):
        for j in range(2):
            for l in range(2):
                res[j][l]+=q[j][i]*w[i][l]
                res[j][l]%=mod
    return res

n,m,k,p,q=map(int,input().split())
mod=10**9+7;ans=0
for i in range(n):
    a,b=0,0
    if i<m:
        a=int(input())
    else:
        b=int(input())
    a=aa(a,b,k)
    ans+=a[0][0]+a[1][0]
print(ans%mod)