What principle of counting would you use in each of the following situations? You have to count the number of three-letter initials. Counting ways to choose a dessert from the menu with three kinds of cakes and four kinds of pies. You have to count the number of positive integers less than 100 that are divisible by 3 or 5. Counting the total number of bit strings of length 5. You have to count the number of different 4-digit pin codes. A. Inclusion-exclusion principle B. Addition principle C. Multiplications principle