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: the looseness of soil increases the amount of oxygen in that soil, Fact2: Without oxygen in the soil, most plants die., Question: Plants may die without what? (A) nucleus of a cell (B) some looseness in the soil (C) wavelengths and photons (D) moss (E) single-celled organisms (F) organic molecules (G) snow (H) rocks
A:
B