Which statement best evaluates the effectiveness of this conclusion paragraph? Thesis: Stores across the country should switch from using plastic bags to using paper bags.

Main points:
1. The energy cost of making plastic bags
2. How plastic bags contribute to litter
3. The benefits of paper bags

Conclusion: To summarize, plastic bags have a high energy cost and contribute to the nation's litter problem. Furthermore, paper bags have many more benefits than plastic bags. Stores, and not just customers, should make the right choice: paper, not plastic.

A. This conclusion is effective because it restates the thesis statement in a new way.
B. This conclusion is ineffective because it does not summarize the main points of the essay.
C. This conclusion is ineffective because it fails to provide a satisfying close.
D. This conclusion is effective because it adds new information not addressed in the main points.