Question 7 SH CHER Weidong Xi Consider the following program: void fun (void) { int x, y, z; /* definition 1 */ while (...) { int x, y, W; /* definition 2 */ while (...) int x, w, v; /* definition 3 */ A } } c } For each of the three marked points (A, B, C) in this function, list each visible variable, along with the number of the definition statement that defines it