# geometry

posted by
**Rick**
.

I'm having a hard time with this question:

"AB has endpoints A(n,4n) and B(3n,6n).

Which of the following is true?

A. AB=4n

B. The midpoint of AB is (2n,2n).

C. AB=n√8

D. The midpoint of AB is (4n,10n)".

PLEASE HELP!!!!!