Which of the following is taken from John Keats’s “Ode on a Grec

Which of the following is taken from John Keats’s “Ode on a Grecian Urn” ______?
A、“If Winter comes, can Spring be far behind”
B、“For God sake hold your tongue, and let me love.”
C、“Heard melodies are sweet, but those unheard/Are sweeter”
D、“The Child is father of the Man.”
【正确答案】：C