B. The poet has a friend named Sorrow who likes autumn.
Explanation:
Robert Frost in his poem "My November Guest" reflects on the bad and depressing moments in a person's life. For the poet, these feelings and emotions are not a permanent member. He assumes them to be a guest who arrives sometimes in life. The bad moments in life has been personified with autumn. He adds that the season of sorrow brings not just negativity, it brings a hope of a positive to hidden behind it.
