Consider the following memory diagram where mis on the stack and the rest is heap memory. It is intended to be used as a 2-dimensional matrix of integers having 3 rows with each having 4 columns (where ? indicates an uninitialized integer value): 1 7 7 Which one of the following code fragments will allocate the heap memory as diagrammed above? O int **m = malloc(sizeof(int*) * 3); m[0] = malloc(sizeof(int) * 3 * 4); m[1] = malloc(sizeof(int) * 3 * 4); m[2] = malloc(sizeof(int) 3 * 4); O int **m = malloc(sizeof(int*) * 3); m[0] = malloc(sizeof(int) * 3 * 4); m[1] = m[0] + 4; m[2] = m[1] + 4; O int **m = malloc(sizeof(int*) * 3); m[0] = malloc(sizeof(int) * 3 * 4); m[1] = m[0]; m[2] = m[0]; O int *m = malloc(sizeof(int*) * 3 * 4); O int **m = malloc(sizeof(int*) * 3); m[0] = malloc(sizeof(int) * 4); m[1] = malloc(sizeof(int) * 4); m[2] = malloc(sizeof(int) * 4)