Extracts from 0.5 gm muscle tissur of two different animals were dispensed in unlabelled tubes A and B for an experiment. During the course of an experiment, the tubes got mixed up. When analysed, it was found that tube B contained a large number of mitochondria as compared to the extract in tube A. This shows that the extract in tube B most probably belongs to
A. Human
B. Seal
C. Humming bird
D. Snail