Detailed Instructions: 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").
Q: Fact1: Lancelet larvae are free-swimming., Fact2: Lancelets are small fishlike animals with tapered bodies., Question: how do the young of small fishlike animals with tapered bodies move? (A) their young (B) flying (C) walking (D) aquatic (E) free-swimming (F) chondrocytes (G) weathering (H) flexible
A:
E