Read the following lines in the third stanza of"The Song of Wandering Aengus"

"Though I am old with wandering
Through hollow lands and hilly lands, I will find out where she has gone"

How does the mood affect the poem?

a.) The mood is bittersweet. It unlikely he will never find her but the search keeps him going.

b.) The mood is elation. He still had a chance to find her.

c.) The mood is defiant. He will prove the reader wrong by finding her.

d.) The mood is relief. He is still looking after many years.