Which line in the excerpt from The Scarlet Letter by Nathaniel Hawthorne is an example of metaphor?
A) It may be that my remedies, so long administered in vain, begin now to take due effect
B) "I thank you from my heart, most watchful friend,"
C) "I thank you, and can but requite your good deeds with my prayers."
D)"A good man's prayers are golden recompense!"