How does the refrain "I sha'n't be gone long.--You come too" most clearly contribute to the meaning of this poem?
A. It enhances the reader's understanding of the speaker's love for
nature.
B. It enhances the reader's understanding of the relationship
between the speaker and his friend.
C. It reinforces the speaker's appreciation of the countryside.
D. It reinforces the speaker's desire that the listener join him in
exploring the pasture.