Which of the Following Can Be Concluded About Genetic Differences

Which of the following can be concluded about genetic differences between races?

A) Based upon recent genetic research, results demonstrate that there are more significant racial differences than have been thought to exist for the past 50 years.
B) Based upon recent genetic research, about 5 percent of the biological differences between humans have been found to be due to race.
C) Based upon recent genetic research, about 5 percent of the cultural differences between humans have been found to be due to race.
D) Based upon recent genetic research, results demonstrate that genetic mixing is so widespread that attempts to sort populations into distinct races fails.