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").

Fact1: acid rain has a negative impact on water quality, Fact2: Sulfur dioxide causes acid rain., Question: What has a negative impact on water quality? (A) Reverse osmosis (B) fossil fuels (C) Fresh water (D) Carbon filter (E) chlorofluorocarbons (F) Sulfur dioxide (G) Pollution (H) harmful substances
F

Fact1: if an object is kicked then force is exerted on that object, Fact2: When a force is exerted on an object, energy is transferred to the object., Question: Energy is transferred to an object when what happens? (A) It gets heated up (B) object is kicked (C) object is forgotten (D) object is abandoned (E) by indirect light (F) Something to move (G) evaporation (H) object is avoided
B

Fact1: sinkholes are formed by precipitation, Fact2: Sinkholes are common in the southwestern portion of the subsection., Question: What is common in the southwestern portion of the subsection? (A) permineralization (B) deuterostomes (C) barrel-shaped (D) cactuses (E) swamp vegetation (F) peachleaf willow (G) precipitation (H) gene flow

G