#include <bits/stdc++.h>
using namespace std;
char getc() {
  char c = getchar();
  while ((c < 'A' || c > 'Z') && (c < 'a' || c > 'z') && (c < '0' || c > '9'))
    c = getchar();
  return c;
}
long long gcd(long long n, long long m) { return m == 0 ? n : gcd(m, n % m); }
long long read() {
  long long x = 0, f = 1;
  char c = getchar();
  while (c < '0' || c > '9') {
    if (c == '-') f = -1;
    c = getchar();
  }
  while (c >= '0' && c <= '9')
    x = (x << 1) + (x << 3) + (c ^ 48), c = getchar();
  return x * f;
}
int n, m;
long long a[300010], b[300010];
signed main() {
  n = read(), m = read();
  for (int i = 1; i <= n; i++) a[i] = read();
  for (int i = 1; i <= m; i++) b[i] = read();
  sort(a + 1, a + n + 1);
  long long u = 0;
  for (int i = 2; i <= n; i++) u = gcd(u, a[i] - a[i - 1]);
  for (int i = 1; i <= m; i++)
    if (u % b[i] == 0) {
      cout << "YES" << endl;
      cout << a[1] << ' ' << i;
      return 0;
    }
  cout << "NO";
  return 0;
}
