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

n,w,k=map(int,input().split())
mat=[[0]*2 for i in range(2)];mod=10**9+7
ans=[[0]*2 for i in range(2)];ans[0][0]=1
a=list(map(int,input().split()))
dp=[0]*(w*2+1);dp[0]=1
for i in range(w*2):
    if w==i:
        continue
    for j in a:
        if i+j<=w*2:
            dp[i+j]+=dp[i]
mat[0][0]=dp[w]%mod
mat[1][0]=1;mat[0][1]=dp[w*2]%mod
while k:
    if k&1:
        ans=aa(ans,mat)
    k>>=1;mat=aa(mat,mat)
print(ans[0][0])