Which of the following code segments does not increment val by 3:

a. val += 3;
b. val = val + 1;
val = val + 1;
val = val + 1;
c. c = 3;
val = val + (c == 3 ? 2 : 3);
d. All of the above increment val by 3.

c. c = 3;
val = val + (c == 3 ? 2 : 3);