For the violin, viola, cello, and double-bass, an object is commonly used to create sound from the instrument. This object is a long and thin piece of wood with horse hairs stretched from end to end. Those horsehairs are moved over the strings of the instrument to create sound. What is this object called?

A. Slide
B. Bow
C. Staff
D. Fiddle
E. Hammer

Answer: B. Bow