I chose A and B which just goes to show that you should never take a quiz right after you wake up. “Ascii code 65 means A, peace of cake, who could get that wrong?” The person not awake enough to comprehend the actual question (me). 🙂
But it does seem like an implicit conversion in this case, could be problematic. After all, you’re sending a numeric parameter to a function designed to accept a character. Seems to me there is a problem in the code that should be fixed, but instead of an “invalid parameter” error, Microsoft “helps” out with an implicit conversion allowing the program to continue, giving you the wrong answer, and making it harder to find the problem.