Question 5. (20 points) 10. Consider the following program: void fun (void) { int a, b, c; /* definition 1 */ while (...){ int b, c, d; /*definition 2 */ while (...){ int c, d, e; /* definition 3 */ For each of the four marked points in this function, list each visible vari- able, along with the number of the definition statement that defines it