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: Growth is faster during infancy than it is during puberty., Fact2: Physiological stresses can relate to changes in growth size, for example., Question: What are faster during infancy than during puberty? (A) unicellular organisms (B) several genes (C) changes in size (D) changes in speed (E) prokaryotic cells (F) changes in eating (G) changes in color (H) thermal expansion
A:
C