If a^2+3^b=33, where a and b are positive integers, what is the value of ab?

**Answer Choices**

A. 11

B. 24

C. 16

D. 32

E. 27

If a^2+3^b=33, where a and b are positive integers, what is the value of ab?

**Answer Choices**

A. 11

B. 24

C. 16

D. 32

E. 27