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.

Ex Input:
The number of fish in a lake suddenly increases. How will the increase most likely affect the lake?  
 (A) There will be less water in the lake. (B) More plants will grow in the lake. (C) More frogs will live in the lake. (D) There will be fewer insects in the lake.

Ex Output:
D


Ex Input:
Which part of an atom is involved in chemical reactions?  
 (A) nucleus and its particles (B) negatively-charged particles (C) neutrally-charged particles (D) positively-charged particles

Ex Output:
B


Ex Input:
Residential construction is expanding in Florida. The expansion has caused fragmentation of habitats. One of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear, and panther. Which will be the most immediate local result of this fragmentation?  
 (A) decrease in middle-sized predators (B) large predators will become extinct (C) increase in population of prey species (D) increase in population of top carnivores

Ex Output:

C