In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").
--------
Question: Which likely increased atmospheric CO2 recently? (A) sustainable fisheries (B) electric cars (C) motorcycles (D) ant populations

Answer: C


Question: Disposition is the process of forming what? (A) Crystals (B) Rocks (C) Salactites (D) Gemstones

Answer: C


Question: An iron horseshoe with red stripes is held over a paperclip and (A) melts it (B) drops it (C) burns it (D) yanks it

Answer:
D