Which of the following is the correct cathode placement rule for nerve conduction studies?
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A
Cathode proximal to the anode to avoid hyperpolarization under the anode blocking the impulse
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B
Cathode distal to the anode so the stimulus travels orthodromically
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C
Cathode and anode positions do not affect the measured latency
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D
Cathode over the muscle belly and anode over the nerve trunk