Which Doppler pattern at the mitral valve is consistent with Grade I (impaired relaxation) diastolic dysfunction?
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A
E/A >2 with short deceleration time (<150 ms)
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B
E/A <1 with prolonged deceleration time (>220 ms)
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C
E/A = 1 with normal deceleration time
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D
Bidirectional M-shaped diastolic flow