Two Wave Pulses with Equal Positive Amplitudes Pass Each Other

Multiple Choice

Two wave pulses with equal positive amplitudes pass each other on a string, one is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the same time

A) constructive interference occurs.
B) destructive interference occurs.
C) a standing wave is produced.
D) a traveling wave is produced.
E) a wave pulse is produced.