Normal sinus rhythm requires which set of criteria?
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A
Regular P waves upright in II and inverted in aVR, constant PR 120-200 ms, rate 60-100 bpm, narrow QRS
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B
P waves inverted in II, rate 60-100 bpm
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C
PR interval greater than 200 ms, rate 60-100 bpm
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D
Rate 60-100 bpm with no P waves