Select the correct answer.

How does the theme that competition is sometimes forced emerge in the passage?

A.
from White Fang's observance of older dogs pulling Grey Beaver's sled
B.
from the description of Mit-sah's relationship with Grey Beaver
C.
from the description of the sled dogs and their order on the sled
D.
from White Fang's recollection of his earlier memories with sled dogs