During a lecture on neuroanatomy, a professor discusses the cell composition of the human brain, which has around 86 billion cells. If the ratio of neurons to glial cells in the human brain is approximately 1:1.5, how many neurons are there in the human brain?

• A. 34.4 billion
• B. 51.6 billion
• C. 57.3 billion
• D. 24 billion

Answer: (A)