NEET 2005 Biology question

Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter ?

• (A)Microbes did not appear in stored meat
• (B)Larvae could appear in decaying organic matter
• (C)Microbes appeared from unsterilized organic matter
• (D)Meat was not spoiled, when heated and kept sealed in a vesselCorrect