Question

English Poetry Help????

Which line from Percy Shelly's "Ode to the West Wind" most directly describes a contrast to the subject of the work?

a. "...Yellow, and black, and pale, and hectic red."
b. "...Thine azure sister of the spring shall blow..."
c. "...Wild Spirit, which art moving everywhere..."
d. "...Lose clouds like earth's decaying leaves are shed..."