Task: Question Answering
Input (English): A plant scientist is developing a new fertilizer called Hypergrow. She designs an experiment to test whether Hypergrow helps plants grow faster than Supergrow, a fertilizer already on the market. Which of the following should the scientist do with light during the experiment?  
 (A) Apply the same amount of light to all the plants. (B) Apply only green light to all the plants. (C) Flash the lights to simulate a partly cloudy day. (D) Keep the plants in darkness.
Output (English): A