#include <bits/stdc++.h>
int n, m, s, p = 1000000007, c[2020][2020];
int main() {
  for (int i = 0; i < 2000; i++) {
    c[i][0] = 1;
    for (int j = 1; j <= i; j++)
      c[i][j] = (c[i - 1][j - 1] + c[i - 1][j]) % 1000000007;
  }
  scanf("%d %d %d", &n, &m, &s);
  printf("%I64d\n", 1LL * c[n - 1][2 * s] * c[m - 1][2 * s] % 1000000007);
  return 0;
}
