Why do rabbits from polar regions have white fur?

Question

Responses
A The white fur is more attractive.The white fur is more attractive.
B The white fur camouflages them in the snow.The white fur camouflages them in the snow.
C The white fur reflects more light warming the rabbit.The white fur reflects more light warming the rabbit.
D The white fur makes the rabbits stand out in the snow.

Answer 1

B The white fur camouflages them in the snow.