A Wave Pulse Traveling to the Right Along a Thin

Multiple Choice

A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thinner and lighter. What is the orientation of the reflected and transmitted pulses?

A) both are right side up
B) the reflected pulse returns right side up while the transmitted pulse is inverted
C) the reflected pulse returns inverted while the transmitted pulse is right side up
D) both are inverted
E) It is impossible to predict.