Why does the speaker in “when, in disgrace with fortune and men’s eyes” compare his feelings to those of a "lark at break of day" when he thinks about his beloved?

a.
although the speaker is discontented, his beloved makes his spirits soar like a lark in flight.

b.
although his beloved pays him no attention, he hopes that he will catch her notice if he sings like a lark.

c.
he associates his beloved with the daylight, the time when the lark sings, so he wishes to be like a lark and in her presence.

d.
his beloved belongs to a higher social class than he does, and his love for her makes him feel need to fly upward, like a lark.