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

Answer Choices
A. \circ\Delta
B. \circ\Delta\Delta
C. \circ\circ\Delta
D. \circ\circ\Delta\Delta
E. \circ\circ\circ\Delta

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