A Classmate Claims That He Can Smell the Difference Between

Multiple Choice

A classmate claims that he can smell the difference between a Starbucks cup of coffee and a Dunkin' Donuts cup of coffee. You decide to test this claim by blindfolding him and presenting him with two cups of coffee - one from Starbucks and one from Dunkin' Donuts.
-Your classmate guesses the correct brand of coffee both times in two trials. Does this convince you that your classmate's claim is true?

A) Yes, since the classmate was correct in 100% of the trials.
B) Yes, since if the classmate was just guessing, it is very unlikely to guess correctly twice in a row.
C) No, since if the classmate was just guessing, there is a 50% chance of guessing correctly twice in a row.
D) No, since if the classmate was just guessing, there is a 25% chance of guessing correctly twice in a row.