Which lines from "The Listeners" best support the inference that the Traveler was gone longer than the people in the house expected?
 A "'Tell them I came, and no one answered, 
 That I kept my word,' he said."
 B “'Is there anybody there?' said the Traveler,
 Knocking on the moonlit door;"
 C "And he felt in his heart their strangeness,
 Their stillness answering his cry,"
 D "But only a host of phantom listeners
 That dwelt in the lone house then"