You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Q: If 1 kg of the compound toluene melts at -95°C, then 500 g of toluene will  
 (A) melt at -47.5°C. (B) melt at -95°C. (C) boil at 95°C. (D) boil at 47.5°C.

A: B
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Q: A biological community is made up of all the  
 (A) populations living in an area (B) natural resources present in an area (C) members of a species on Earth (D) environments on Earth

A: A
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Q: A student flips a coin four times. It lands "heads" up three times. The student concludes that the coin will land "heads" up three times out of four. What will make the conclusion more accurate?  
 (A) substituting a different coin (B) flipping the coin twenty more times (C) taping a weight to one side of the coin (D) flipping the coin over a smoother surface

A:
B
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