What is the output of this C program?#include void square (int *x){*x = (*x)++ *(*x);}void square (int *x, int *y){*x = (*x) * --(*y);}int main ( ){int number = 30;square(&number, &number);printf("%d",number);return 0;}

• A. 910
• B. 920
• C. 870
• D. 900