In a Binary Star System That Contains Stars with 2M $\odot$

In a binary star system that contains stars with 2M _$\odot$ and 1M _$\odot$ , the velocity of the 2M _$\odot$ star will be _________ times the velocity of the 1M _$\odot$ star.

A) 0.2
B) 0.5
C) 1
D) 2
E) 3