GAUSS7 2015 Problem 4

The equal-arm scale shown is balanced. One gauss7 2015 4 q has the same mass as

Image

Answer Choices
A. gauss7 2015 4a retake
B. gauss7 2015 4b
C. gauss7 2015 4c
D. gauss7 2015 4d
E. gauss7 2015 4e