Which One of the Following Statements Is TRUE

Which one of the following statements is TRUE?

A) Despite the fact that some people write with their left hand, all humans show left-hemisphere-dominance for language functions.
B) The vast majority of people are strongly right-handed, using their right hands for virtually all tasks requiring dexterity.
C) The fact that it is very easy to teach infants and young children to be left-handed strongly suggests that handedness is determined by environmental conditions, not genetics.
D) The percentage of the population that is strongly left-handed is approximately 15 to 20 percent.