The image below shows a sound wave emitted by a sound source that travels between two media. A vertical boundary exists between the two media. There are four marked locations: A, B, C, and D.

Sound wave travels from sound source towards the right where there is a media boundary. Four locations marked: A, B, C, D. A is the arrow pointing left away from the boundary at an angle opposite to the initial wave. B is at a 45 degree angle pointing right towards the boundary. C is the arrow after the media boundary pointing right at the same angle as the initial wave. D is the arrow after the media boundary pointing right at an angle less than the initial arrow.

Which letter identifies where the refracted wave would be after it interacts with the media boundary?

A
B
C
D