40. Choice D is the correct answer. There is an positive deflection of the QRS complex in both leads I and avF which indicates a normal axis. Extreme right axis deviation has a negative deflection of both leads I and avF. Right axis deviation has a negative deflection of the QRS complex in lead one and a positive deflection in lead avF. Left axis deviation has a positive deflection of the QRS complex in lead I and negative deflection of lead avF.
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