You are given a science question (hard-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.

Input: Consider Input: Ice will form on small ponds when the temperature drops below 0°C. Which property of ice is most beneficial to fish living in these ponds?  
 (A) Ice has a temperature colder than the temperature of water. (B) Ice absorbs sunlight that is reflected by water. (C) Ice traps more pollution than is trapped by water. (D) Ice had a density lower than the density of water.

Output: D


Input: Consider Input: A cupful of water and a similar cupful of gasoline were placed on a table near a window on a hot sunny day. A few hours later it was observed that both the cups had less liquid in them but that there was less gasoline left than water. What does this experiment show?  
 (A) All liquids evaporate. (B) Gasoline gets hotter than water. (C) Some liquids evaporate faster than others. (D) Liquids will only evaporate in sunshine. (E) Water gets hotter than gasoline

Output: C


Input: Consider Input: Which resource is renewable?  
 (A) oil (B) coal (C) natural gas (D) water


Output: D