Could I revive within me her symphony and song, To such a deep delight—'twould win me, That with music loud and long, I would build that dome in air . . . Which event does the narrator want to repeat?

a) The voices that Kubla Khan told him he had heard
b) The vision he saw of Mount Abora
c) The sound that he heard in the caves of ice
d) The sound of a woman's singing and playing