In Shakespeare's sonnet “That Time Of Year Thou Mayst In Me Behold," why is the speaker compared to the onset of winter, twilight, and dying embers?
A. to convey that the speaker is an unemotional, cold person
B. to convey that the speaker believes he has nothing left to live for
C. to convey that the speaker has lost his youth and is approaching old age
D. to convey that the speaker is depressed because his beloved thinks he's old