Draw the Activation Record stack during the execution of function sub1. Note that the main function calls sub2, and, then, sub2 calls sub1. Assume the pass-by-value parameter passing method and the dynamic scoping are used for the implementation. You can draw your stack using MSExcel, MSWord, or a similar tool, and, then you can upload your file to the system.

int sub1 (int a, float b) {

int x, y[2];

...

}

int sub2 (float p) {

float a=3.0*p;

return (sub1(5, a));

}

int main (void) {

float r=4.0;

printf ("%d ", sub2(r));

return (0);

}