n,w,k= map(int,input().split())
A = list(map(int,input().split()))
mod = 10**9+7


def calc(x,y):
    ans = [[0]*2 for i in range(2)]
    for i in range(2):
        for j in range(2):
            for t in range(2):
                ans[i][j] += x[i][t]*y[t][j]
                ans[i][j] %= mod
    return ans


dp = [0]*(w*2+1)
dp[0] = 1
for i in range(w*2+1):
    for a in A:
        if i + a <= 2*w:
            dp[i+a] += dp[i]
            dp[i+a] %= mod
base = [[1,0],[0,1]]
A = [[dp[w],(dp[-1]-dp[w]**2)%mod],[1,0]]

while k:
    if k & 1:
        base = calc(A,base)
    k >>= 1
    A = calc(A,A)

print(base[0][0])