In the Longitudinal Study of Robert McCall and His Colleagues

In the longitudinal study of Robert McCall and his colleagues, children who increased in IQ tended to have parents who

A) did not emphasize intellectual acceleration but used moderately severe punishment.
B) did not emphasize intellectual acceleration but scored high in their use of punishment.
C) emphasized intellectual acceleration and scored high in their use of punishment.
D) emphasized intellectual acceleration and were intermediate in their use of punishment.