A Periodic Wave Travels Along a Stretched String in the Direction

Multiple Choice

A periodic wave travels along a stretched string in the direction shown by the arrow. The sketch shows a "snapshot" of the pulse at a certain instant. Points A, B, and C are on the string. Which entry in the table below correctly describes how particles of string between A and B and between B and C are moving? between A and B between B and C

A) down down
B) up down
C) left right
D) up up
E) down up