Scientists at Johns Hopkins Medicine meticulously counted brain cells in fruit flies and three species of mosquitos, revealing a number that would surprise many people outside the science world. The insects’ tiny brains, on average, have about 200,000 neurons and other cells, they say. By comparison, a human brain has 86 billion neurons, and a rodent brain contains about 12 billion. Even though these brains are simple (in contrast to mammalian brains), they can do a lot of processing, even more than a supercomputer. They enable the insects to navigate, find food and perform other complicated tasks at the same time.

According to this passage, we can know that fruit flies __

A) have about 12 billion neurons and cells in the brain.

B) have more brain cells than rodents.

C) can do more processing than a supercomputer.

D) can’t navigate and find food at the same time.