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.

Input: Consider Input: In the forest, one type of tree produces special seeds. These seeds start to grow only after going through a fire. In the fire, the adult trees are destroyed. Which resources, needed for growth, are now available to the newly growing seeds?  
 (A) sunlight and wind (B) sunlight and space (C) soil and pollen producers (D) pollen producers and space

Output: B


Input: Consider Input: What gas in the air do we need to breathe in order to live?  
 (A) nitrogen (B) oxygen (C) carbon dioxide (D) hydrogen (E) water vapor

Output: B


Input: Consider Input: Biotic forces can cause changes to the surface of Earth. Which is the best example of living organisms causing weathering?  
 (A) Beavers building a dam across a stream. (B) Cattle walking and grazing in a grassland. (C) Salmon making nests for their eggs in a stream. (D) Tree seedlings growing and forming cracks in rocks.


Output: D