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").

[EX Q]: Fact1: mechanical weathering is when rocks are broken down by mechanical means, Fact2: Water is a mechanical weathering force., Question: What  weathers rocks? (A) soil (B) streams (C) a delta (D) calcite (E) erosion (F) water (G) grass (H) the sun
[EX A]: F

[EX Q]: Fact1: Lions live in social groups called prides., Fact2: Lions live in Africa., Question: where are there social groups called prides? (A) under the sea (B) outer space (C) complex (D) protected (E) arctic (F) fur seals (G) Summer (H) africa
[EX A]: H

[EX Q]: Fact1: Earth 's tilt on its rotating axis causes seasons to change, Fact2: Winter is a horrible season., Question: What does Earth's tilt on its rotating axis cause? (A) rainfall (B) spring (C) heat (D) friction (E) winter (F) wind (G) flooding (H) erosion
[EX A]:
E