6) Consider the following C#-like program: public void main(){ int a, b, c; } public void fun10){ int b, c, d; } public void fun2(){ int c, d, e; } public void fun3(){ int d, e, f; } Given the following calling sequence and assuming that dynamic scooping is used, what variables are visible during execution of the last and second last function called? Include with each visible variable the name of the function in which it was defined. a) main calls fun2; fun2 calls fun3; fun3 calls fun1. [8 pts] b) main calls fun3; fun3 calls fun 1. [7 pts]