Task: Question Answering
Input (English): Tony always drinks water before and after his long bike rides. Why does his body need water when he exercises?  
 (A) Drinking water after exercise allows the body to sleep. (B) Drinking water after exercise helps to replace lost fluids. (C) Drinking water before exercise helps increase the heart rate. (D) Drinking water before exercise prevents the body from sweating.
Output (English): B