Which narrative poem by John Keats explores the Grecian urn as a symbol of timeless beauty?
A. "Ode to a Nightingale"
B. "To Autumn"
C. "Ode on a Grecian Urn"
D. "Endymion"
"Ode on a Grecian Urn" is a narrative poem that uses the Grecian urn as a symbol, contributing to the symbolic narrative tradition.