Which of these is an example of allusion?
a) Deep harvests bury all his pride has planned,
And laughing Ceres reassume the land.”
b) A flowery tale more sweetly than our rhyme:
What leaf-fringed legend haunts about thy shape
c) “All overgrown by cunning moss,
All interspersed with weed,
d) So dawn goes down to day.
Nothing gold can stay.”