Which would most likely appear in an objective summary:

A. Christina Catnese argues that rain barreles are an easy, effective, and inexpensive way to conserve water.

B. The article explains the benefits of rain barreles, but I don't think I'd ever fill my fish tank with rainwater

C. Rain barreles hardly seem worth the time or effort.

D. Everybody should want to make positive contributions to the environment.