On tests with four choices (say, A, B, C, and D), B was slightly more likely to be correct (28%). Remember, the expected likelihood of each option being correct is 25%. And on tests with five choices (say, A, B, C, D, and E), E was the most commonly correct answer (23%).

Is C really the most common answer?

So, ultimately, guessing C (or any letter!) will give you the correct answer only a statistical 25% of the time (20% on the math section). Which means it's NOT true that choosing C will give you a better rate of success than choosing any other letter for your blind guessing.

How do you choose the best answer in multiple choice?