GAUSS8 2012 Problem 21

Past Contests GAUSS8 2012
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1

All three scales shown are balanced. One possible replacement for the ? Is

Image

Answer Choices
A. {\Huge\circ}\Delta
B. {\Huge\circ}\Delta\Delta
C. {\Huge\circ\circ}\Delta
D. {\Huge\circ\circ}\Delta\Delta
E. {\Huge\circ\circ\circ}\Delta