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:
How is xylem similar to phloem in a plant?  
 (A) They both take in water from the soil. (B) They both transport materials through the plant. (C) They both make sugar in the leaves. (D) They both store waste products in the plant cells.

Ex Output:
B


Ex Input:
How do plants get water and minerals?  
 (A) absorbed from the soil though the roots (B) absorbed from the soil through the stem (C) absorbed from the air through the flowers (D) absorbed from the air through the leaves

Ex Output:
A


Ex Input:
Nutrients are recycled when materials decompose in an ecosystem. Which is the best example of the decomposition process where organic material is recycled in an ecosystem?  
 (A) a hawk eating a mouse (B) worms tunneling through soil (C) bacteria feeding on dead plants (D) a plant using nitrogen to make proteins

Ex Output:

C