Task: Question Answering
Input (English): Many bacteria grow quickly at room temperatures of about 20°C. The temperature inside a refrigerator is usually kept at about 4°C. Which statement best explains how using a refrigerator has helped society?  
 (A) It keeps kitchens cooler in the summer. (B) It provides more space for food storage. (C) It makes food safer to eat for longer periods. (D) It makes electricity safer to use in the kitchen.
Output (English): C