Which excerpt from "The Monkey's Paw" would be considered the story's climax?

A.He heard the creaking of the bolt as it came slowly back, and at the same moment he found the monkey's paw, and frantically breathed his third and last wish.

B.Unconscious of his wife's shriek, the old man smiled faintly, put out his hands like a sightless man, and dropped, a senseless heap, to the floor.

C.A cold wind rushed up the staircase, and a long loud wail of disappointment and misery from his wife gave him courage to run down to her side, and then to the gate beyond.

D.In the huge new cemetery, some two miles distant, the old people buried their dead, and came back to a house steeped in shadow and silence.