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").

[EX Q]: Fact1: insulated material can be used for keeping warm, Fact2: An insulated cup with a cover is great for keeping beverages warm., Question: How do you keep a cup hot? (A) less water (B) electricity (C) heat energy (D) adding heat (E) energy usage (F) insulation (G) squeeze (H) energy
[EX A]: F

[EX Q]: Fact1: Differentiation is the process by which unspecialized cells become specialized., Fact2: T helper cells differentiate to Memory cells and effector cells., Question: memory cells and effector cells are what compared to T helper cells (A) dermal & vascular tissue (B) antibodies (C) fetal development (D) antigens (E) occurs over a wide range (F) prokaryotic cells (G) unicellular organisms (H) more specialized
[EX A]: H

[EX Q]: Fact1: Evaporation of sweat uses energy, and the energy comes from body heat., Fact2: Diaphoresis is a fancy medical term for perspiration or sweating., Question: Which of the following uses energy that comes from body heat? (A) kinetic energy (B) evaporation of perspiration (C) kinetic friction (D) evaporation of snow (E) Transfers energy (F) a rock rolling down a hill (G) a fire burning near a campsite (H) converting mass to energy
[EX A]:
B