If n is a positive integer and n^2 is divisible by 72, then the largest positive integer that must divide n is?
.	Choose the correct choice:  A) 6  B) 12  C) 24  D) 36  E) 48
72 x 1 = 72   72 x 2 = 144   14^4=12^2   Largest possible which can divide 12 is 12   Answer = 12
<result>B</result>
If n is a positive integer and n^2 is divisible by 72, then the largest positive integer that must divide n is?
.