Slindile and Her Four Sisters Are All Artistically Inclined and Enjoy

Slindile and her four sisters are all artistically inclined and enjoy working on creative projects. When she meets her three cousins for the first time, Slindile is somewhat surprised to find that none of them have any interest at all in art. The differences between Slindile's sisters and her cousins could be used as evidence to suggest that

A) environmental factors have more influence than genetic factors in artistic interest.
B) both genetic and environmental factors contribute equally to artistic interest.
C) neither genetic nor environmental factors contribute to artistic interest.
D) genetic factors have more influence than environmental factors in artistic interest.