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").
--------
Question: Fact1: Veins generally carry deoxygenated blood., Fact2: Arteries and veins are blood vessels., Question: what generally carries deoxygenated blood? (A) blood vessels (B) animals (C) layers of fat (D) mammals (E) critical organs (F) an organism's body (G) elephants (H) athletes

Answer: A


Question: Fact1: eating food that contains pesticides can have a negative impact on humans, Fact2: Foods such as porous strawberries are hard to wash free of pesticides., Question: What can have a negative effect on humans? (A) Proper exercise and nutrition. (B) Affirmation and praise. (C) influenza orthomyxoviruses (D) movement of tectonic plates (E) Eating unwashed strawberries. (F) Eating a healthy diet. (G) ozone depletion (H) scraping oneself on a contaminated object

Answer: E


Question: Fact1: Immunodeficiency occurs when the immune system is not working properly., Fact2: Iron deficiency causes anemia and it weakens the immune system., Question: What can low iron cause? (A) contamination (B) Pollution (C) decrease stamina (D) harmful substances (E) immunodeficiency (F) the ground shaking (G) cloudy and rainy weather (H) Temperature changing

Answer:
E