Imagine an Earthworm That Has No Chaetae

Imagine an earthworm that has no chaetae.How would the lack of chaetae affect movement of the earthworm?

A) The earthworm would have difficulty changing locations, since it cannot anchor itself in the soil.
B) The earthworm would be much flatter than normal since it has no hydrostatic skeleton.
C) The earthworm would only be able to extend its body segments.
D) The earthworm would only be able to shorten its body segments.