Question: In a certain three-branch parallel circuit, R 1 has 12 mA through it, R 2 has 15 mA through it, and R 3 has 25 mA through it. After measuring a total of 27 mA, you can say that
Options
A : R 3 is open
B : R 1 is open
C : R 2 is open
D : the circuit is operating properly
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