Two fair die with sides numbered 1 to 6 are tossed. What is the probability that the sum of the exposed faces on the die

Two fair die with sides numbered 1 to 6 are tossed. What is the probability that the sum of the exposed faces on the die is a prime number?

A) $\dfrac5{11}$

B) $\dfrac5{12}$

C) $\dfrac5{21}$

D) $\dfrac29$

E) $\dfrac5{36}$

Answer: B

Source: Manhattan GMAT

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