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").

Fact1: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.
C

Fact1: Pregnancy is the carrying of one or more offspring from fertilization until birth., Fact2: An elephant pregnancy lasts about 22 months., Question: How long is the time from fertilization until birth for an elephant? (A) minutes (B) fewer (C) winter (D) 22 months (E) eight (F) Ages 0 to 3 (G) 86400 (H) calibrated
D

Fact1: Nonmetal elements are far fewer in number., Fact2: Nonmetals are the 17 elements in the upper right hand corner of the periodic table., Question: Where, on the periodic table, is the element type that is less common? (A) third page (B) hydrogen (C) weater (D) Elemental (E) top level of pyramid (F) not included (G) right corner (H) mineral

G