Laila guesses on all 20 questions of a multiple-choice test. Each question has 4 answer choices. What is the probablity of a success and a failure for this experiment?
A. P (success) = 1/4, P (failure) = 3/4
B. P (success) = 1/4, P (failure) = 1/2
C. P (success) = 3/4, P (failure) = 1/4
D. P (success) = 1, P (failure) = 0
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