what is the purpose of the poet's use of the phrase 'learning astronomer' in line 1 of the poem?

Question

A. to suggest that the astronomer is a great scholar in his field.
B. to suggest the the astronomer knowns facts, but lacks imagination.
C. to suggest that the astronomer impresses the speaker of the poem.
D. to suggest that the astronomer is a men of great wisdom, but is humble.

Answer 1

B. to suggest the the astronomer knows facts, but lacks imagination.