Query about question "$2^{\frac{6}{4}} \times 3^{\frac{1}{2}} \times 6^{\frac{3}{2}}$..." [6163]

https://www.gregmat.com/problems/quant?problem=2frac64-times-3frac12-times-6frac32


why would quantity A not be greater? I am geting that A is 91 and B is 72

How did you get 91?