Q: 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: Plants exhibit phototropism, or growing toward a light source., Fact2: First, the sun is a brilliant source of white light., Question: What behavior do plants exhibit that makes them grow towards the sun? (A) phototropism (B) Exfoliation (C) photography (D) peachleaf willow (E) chlorophyll (F) Chemical energy (G) direct energy (H) chloroplasts
A:
A