Question: In astronomy the concept of black bodies is very important to better calculate the radiation of stars. Which one is the correct definition of a black body?
A: An idealized physical object that reflects all electromagnetic radiation.
B: An idealized physical object that absorbs all electromagnetic radiation.
C: An idealized physical object that reflects all polarized radiation.
D: An idealized physical object that absorbs all polarized radiation.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Provide response in all capital letters, no lowercase letters allowed.
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