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: Molecules of tRNA bring amino acids to the ribosome in the correct sequence., Fact2: Ribosomes are sites of protein synthesis., Question: Molecules of _ initiate protein synthesis (A) Acids (B) nektar (C) sugar (D) tRNA (E) H 2 O (F) three (G) CO 2 (H) HIV
[EX A]: D

[EX Q]: Fact1: Cancer cells divide more often than normal cells, and grow out of control., Fact2: Cancer is an example of a mutation in cells., Question: What divide more often than normal cells, and grow out of control? (A) white blood cells (B) Most plants (C) hair cells (D) skin cells (E) Smoking (F) peachleaf willow (G) mutated cells (H) cigarettes
[EX A]: G

[EX Q]: Fact1: a glacier causes mechanical weathering, Fact2: Largest of the glacier-formed lakes is Karakul., Question: What can be formed by mechanical weathering? (A) NaCl (B) white (C) rock (D) tube (E) soils (F) Roads (G) Lakes (H) sand
[EX A]:
G