Many scientists from around the world have conducted research and published papers related to the estimated number of genes in the human body. The estimates have ranged from 20,000 all the way up to 150,000. Currently, most scientists agree that the number of genes is somewhere around 25,000. Which of the following can be inferred based on this information?
A. The number of genes can vary widely from individual to individual.
B. Human genes are of interest to cell biologists but not to those in other scientific disciplines.
C. Human genes are more difficult to count than those from other organisms and results vary widely.
D. The number of genes has been a subject of debate and the validation of these findings is important to the scientific community.