What is the percentage of water present in our brain?

A. 85%
B. 95%
C. 97%
D. 73%

According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.