You're not dumb, it's just a small matter of learning. 
First, we have to solve the exponents by multiplying them to their exponents. 
3^4 = 3 x 3 x 3 x 3 
3^4 = 81 
3^2 = 3 x 3 
3^2 = 9 
Therefore, our new fraction is 81/9. 
Lastly, we just need to simplify it. 
81/9 = 9
That means your answer would be B.