A note, A from a guitar produces a wave of amplitude 4 mm and frequency 1000 Hz. Another note, B from a whistle produces a similar waveform of amplitude 2 mm and frequency 2200 Hz. If the two notes are compared,
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A.
A has a higher pitch than B -
B.
A is louder than B. -
C.
B has a greater speed than A -
D.
B is louder than A -
E.
A and B have the same quality