Read the sentence and look at the sentence diagram:

"Trash was scattered, and it looked terrible."

Diagram:
- Trash
- was scattered
- along
- highway
- and
- looked
- terrible

To more clearly explain where the trash was scattered, what should be done with the diagram of the prepositional phrase below?

A. It should be placed under the verb "scattered."
B. It should be added under the conjunction "and."
C. It should be placed under the pronoun "it."
D. It should not be added to the sentence at all.