You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Example Input: Two workers are using a scaffold. One worker weighs 180 lbs. and the other weighs 200 lbs. Impact effects are assumed to increase the live load of the workers' weight by 25 percent. What is the resultant maximum live load, in pounds, that can be expected from the two workers supported by the scaffold?  
 (A) 380 lbs. (B) 475 lbs. (C) 625 lbs. (D) 950 lbs.
Example Output: B

Example Input: While Anna was testing a circuit, she dropped a light bulb. What is the safest thing Anna can do?  
 (A) get a new bulb to finish the test (B) push the broken glass under a table (C) tell her teacher that she broke the bulb (D) ask her partner to help pick up the broken glass
Example Output: C

Example Input: Which dog trait is a learned behavior?  
 (A) blinking its eyes (B) scratching an itch (C) panting to cool off (D) jumping to catch a ball
Example Output:
D