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:
Which example would result in new cells that are most different from the parent cells?  
 (A) yeast cells splitting into new cells (B) bacteria cells dividing into new cells (C) skin cells dividing to produce more skin cells (D) sperm and egg cells uniting to produce fertilized egg cells

Ex Output:
D


Ex Input:
A leaf is covered in mud during a landslide. After one million years, this leaf will most likely be ___.  
 (A) a fossil (B) an animal species (C) a new plant species (D) a nonrenewable fuel

Ex Output:
A


Ex Input:
Plants make sugars in the presence of sunlight in a process called photosynthesis. What form of carbon do the plants take in for this process?  
 (A) glucose molecule (B) carbon dioxide (C) single carbon atoms (D) complex organic compounds

Ex Output:

B