Which of would most likely appear in an objective summary?

a. the article explains the benefits of a rain barrel, but i'm not convinced that the cost savings are worth the effort.

b. steve donohue believes that rain barrels are easy to install and use.

c. if you don't use a rain barrel, you're acting selfishly because your neighbors won't reap the benefits.

d. rain barrels are a pretty unattractive and chunky addition to your home.