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 Input:
Fact1: Bivalves feed on plankton and nonliving organic matter., Fact2: Mussels are bivalve mollusks., Question: What feeds on plankton and nonliving organic matter? (A) barnacles (B) mollusks (C) animals (D) the Sun (E) sharks (F) graptolites (G) bacteria (H) dogs

Ex Output:
B


Ex Input:
Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: With lots of rain and a warm climate, plants grow well., Question: What does a greenhouse help plants do? (A) Park cars (B) Start panicking (C) reproduce (D) growth (E) Bloom slower (F) adding heat (G) Regrows it (H) Grow well

Ex Output:
H


Ex Input:
Fact1: a graduated cylinder is used to measure volume of a liquid, Fact2: For test cylinders without graduation marks, a manual calibration method has to be used., Question: graduation markings are used to measure the what of a liquid (A) viscocity (B) size (C) flow (D) volume (E) density (F) smell (G) Decibels (H) tube

Ex Output:

D