George is writing a newspaper article about the fire at the local library. His introductory paragraph has an example of conservation of mass. Underline the sentence that illustrates conservation of mass.

A. Our town library dealt with a terrible fire in one of its rooms over the weekend

B. Firefighters rushed to the scene, but were too late.

C. The room contained much-loved books and magazines

D. The mayor arrived soon afterward and urged everyone to donate to help rebuild this important community building

E. All that remained of the books and magazines were ash, water vapor, and carbon dioxide fumes