#include <bits/stdc++.h>
using namespace std;
int BIT(int i, long long x) { return (x & (1 << i)); }
long long ONBIT(int i, long long x) { return (x | (1 << i)); }
long long OFFBIT(int i, long long x) { return (x & ~(1 << i)); }
long long FLIPBIT(int i, long long x) { return (x ^ (1 << i)); }
long long NUMBIT(long long x) { return __builtin_popcount(x); }
template <class T>
T gcd(T a, T b) {
  T r;
  while (b != 0) {
    r = a % b;
    a = b;
    b = r;
  }
  return a;
}
template <class T>
T lcm(T a, T b) {
  return a / gcd(a, b) * b;
}
long long POW(long long x, long long y, long long base) {
  if (!y) return 1;
  long long tg = POW(x, y / 2, base);
  tg = (tg * tg) % base;
  if (y % 2)
    return (tg * x) % base;
  else
    return tg;
}
unsigned long long Multy(unsigned long long a, unsigned long long b,
                         unsigned long long base) {
  if (!a || !b) return 0;
  if (a <= ULLONG_MAX / b) return (a * b) % base;
  unsigned long long x = Multy(a, b / 2, base);
  x = (x + x) % base;
  if (b % 2 == 1) x = (x + a) % base;
  return (x);
}
long long Com(int k, int n, int base) {
  long long x = 1, tg = 1, y;
  for (int i = (n - k + 1); i <= (n); i++) x = (x * i) % base;
  for (int i = (1); i <= (k); i++) tg = (tg * i) % base;
  y = POW(tg, base - 2, base);
  return (x * y % base);
}
const char IN[] = "_.in";
const char OUT[] = "_.out";
const int maxn = 310;
const int base = 1e9 + 7;
int n, m, k;
int main() {
  cin >> n >> m >> k;
  cout << (Com(2 * k, n - 1, base) * Com(2 * k, m - 1, base)) % base;
}
