Consider the following skeletal C-like program:

void fun1(void); /* prototype */

void fun2(void); /* prototype */

void fun3(void); /* prototype */

void main() {

int a, b, c;

. . .

}

void fun1(void) {

int b, c, d;

. . .

}

void fun2(void) {

int c, d, e;

. . .

}

void fun3(void) {

int d, e, f;

. . .

}

Given the following calling sequences and assuming that static scoping is used, what variables are visible during execution of the last function called? Include with each visible variable the name of the function in which it was defined.