In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Example Input: Fact1: soil erosion means soil loss through wind, Fact2: Wind is defined as moving air., Question: what causes soil loss from soil erosion? (A) nutrients (B) flooding (C) rainfall (D) moving air (E) deforestation (F) forces (G) stagnant air (H) lome
Example Output: D

Example Input: Fact1: Female monotremes lack a uterus and vagina., Fact2: Monotremes are mammals that lay eggs., Question: What do some female mammals lack? (A) epidermal (B) vision (C) uterus (D) alleles (E) fur (F) a cuticle (G) eardrum (H) alveoli
Example Output: C

Example Input: Fact1: Plants are the major producers in terrestrial biomes., Fact2: Biomes are global ecosystems., Question:  _ are the major producers in terrestrial ecosystems. (A) Plants (B) flowers (C) phytoplankton (D) leaves (E) bacteria (F) Trees (G) algae (H) grass
Example Output:
A