import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;
import java.math.*;

class Main {
	public static void main(String[] args) throws Exception {
		new Main().run();
	}
	
	long[][] mul(long[][] a,long[][] b){
		long[][] ret=new long[a.length][b[0].length];
		for(int i=0;i<a.length;++i){
			for(int j=0;j<b[i].length;++j){
				for(int k=0;k<a[i].length;++k){
					ret[i][j]+=a[i][k]*b[k][j]%M;
					ret[i][j]%=M;
				}
			}
		}
		return ret;
	}
	
	long[][] pow_mat(long[][] a,long n){
		long[][] ret=new long[a.length][a.length];
		ret[0][0]=ret[1][1]=1;
		for(;n>0;n>>=1,a=mul(a,a))if(n%2==1)ret=mul(ret,a);
		return ret;
	}
	
	long pow(long a,long n){
		long ret=1;
		for(;n>0;n>>=1,a=a*a%M)if(n%2==1)ret=ret*a%M;
		return ret;
	}
	
	long inv(long a){
		return pow(a,M-2);
	}
	
	final long M=(long)1e9+7;
	
	void run() {
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int W=sc.nextInt();
		long K=sc.nextLong();
		int[] A=new int[N];
		for(int i=0;i<N;++i){
			A[i]=sc.nextInt();
		}
		long[][] mat=new long[2*W+1][2*W+1];
		for(int i=0;i<N;++i){
			mat[0][A[i]-1]++;
		}
		for(int i=1;i<N;++i){
			mat[i][i-1]=1;
		}
		long[][] mat2=pow_mat(pow_mat(mat,W),K);
		
		long[][] v=new long[mat.length][1];
		v[0][0]=1;
		long[][] ans=mul(mat2,v);
		System.out.println(ans[0][0]);
	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

}