Which statement is true about handedness in people?
a. It is very uncommon for mathematicians, musicians, and artists to be left-handed.
b. There is a tendency for left-handed children to have more reading problems than right-handed children.
c. Left-handed people have a difficult time imagining spatial layouts.
d. One study found that 20 percent of high scoring students taking the Scholastic Aptitude Test were right-handed.