Which voice is equivalent to the expression below?

3√3+√6+√12-2√3

A. 2√3-√21

B. 5√3-6

C. 3√3+√6

D. 5√3

3√3+√6+√12-2√3

Can be even further simplified like this:

3 √3+√2√3+√4√3-2√3

3√3+√6+2√3-2√3 (if you look here, the last 2 negates each other)

3√3+√6

Which makes it equal to option C.

Option C is the correct answer.

Option C is the correct answer.