Imagine That a Study of the Effects of Sesame Street

Imagine that a study of the effects of Sesame Street on children's cognitive development reveals a correlation coefficient of +0.78 between the number of hours of Sesame Street viewed each week and children's reading level. Based on this evidence, which of the following conclusions may be true?

A) Viewing Sesame Street leads to better reading skills.
B) Children with better reading skills find Sesame Street to be more interesting so they watch it more often.
C) Better educated parents encourage their children both to watch Sesame Street and to read for pleasure.
D) All of the above