A student takes a 6-question multiple choice quiz (each with four options, A-D) without studying or attending class. He plans to guess. A score of 4 out of 6 is needed to pass, 5 out of 6 for high pass. a. (1 point) How many questions should he expect to get correct by guessing? b. (2 points) What are his chances of passing by guessing? c. (2 points) What are his chances of a high pass just by guessing? d. (1 point) Should he manage to pass, how likely would it be a high pass? Please show all work