Which excerpt best demonstrates the author's use of foreshadowing in "the signalman"?
a. all that i have here condensed, he said in a quiet manner, with his grave dark regards divided between me and the fire.
b. he had made his bed and he lay upon it. it was far too late to make another.
c. "my good fellow, what should i do there? however, be that as it may, i never was there, you may swear."
d. "let me ask you a parting question. what made you cry 'halloa! below there! ' to-night? "