What is special about the scabbard for the sword excalibur?

Comprehension the question below refers to the selections "ode to a grecian urn."and "when i have fears" by john keats. in the poem, "ode to a grecian urn", the couple is frozen — a. with their lips pressed in a kiss c. by fear of death b. at the moment of pursuit d. at the end of their relationship select the best answer from the choices provided a b c d