PLEASE HELP! In "the Bat Poet", why does the bat go to sleep with the other bats at the end of the story?

AHe is frightened of attack from owl, so he cannot sleep on the porch.

BHe is now comfortable with himself: a bat and a poet

CHe is suffering from writer's block and takes comfort in being his own kind

DThe porch is torn down, so he has no choice