Answer:
According to Indices
(a⁴)²... The exponents will multiply each other to give (a⁶)
Using this here
The two Index would Multiply to give
½ x ⅔ = ⅓
= (27)⅓
Any Number to the Index of ½ simply means its Square root
so also...
Any Number to the index of ⅓ means its cube root...
Cube root of 27 = 3.
So
Option B is your answer.