We can check each option one by one.1. If m = n so we can solve \(\frac{3m}{n} = 3\) which is a prime number greater than 2.

2. If 2. n = 1 we can solve \(\frac{3m}{n} = 3m\) which is NOT a prime number.

3. If m and n are prime integers then \(\frac{3m}{n}\) is not an integer as \(n \neq 3\).

PS: This is not a GRE question (at least format wise). Please refrain from posting non GRE questions in the forum.

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Sandy

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