B 
Given that $n!$ represent $n$ factorial, with $n!=1\times 2\times 3 \times \cdots \times n$, then how many positive integer divisors of $12!$ are perfect squares? 
Options:
  - $$10$$ 
  - $$36$$ 
  - $$198$$ 
  - $$396$$ 
  - $$792$$ 