instruction:
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.
question:
Devil facial tumor disease (DFTD) is a disease that is decimating the population of Tasmanian devils. The disease passes from one animal to another through bites and is caused by parasites. The parasites cause cancerous tumors that spread throughout an infected animal's body and kill it. What is the best description of DFTD?  
 (A) a non-infectious, cell-cycle disease (B) an infectious, cell-cycle disease (C) a non-infectious, chronic disease (D) an infectious, chronic disease
answer:
B


question:
A ship leaks a large amount of oil near a coastal area. Which statement describes how the oil most likely will affect the coastal habitat?  
 (A) Fish reproduction rates will increase. (B) Water birds will be unable to use their wings. (C) Water plants will be exposed to more sunlight. (D) Coastal plants will have access to more nutrients.
answer:
B


question:
A flowing stream contains water at 18°C. Cans of soft drinks at 28°C are lowered into the stream. Which of the following will most likely occur?  
 (A) The soft drink cans will absorb cold energy from the stream's water. (B) The cans will cool until their temperature is the same as the stream's. (C) The temperature of the soft drinks will not change since the cans are sealed. (D) The temperature of the cans will decrease to freezing as long as the stream is flowing.
answer:

B