Given What Is Known About Heritability of Intelligence, What Can

Given what is known about heritability of intelligence, what can be stated about the boys' scores on the intelligence test?

A) This test may not be valid because brothers typically have scores that are more similar.
B) The strong heritability of intelligence is reflected in the identical raw scores on the test.
C) Scores of individuals cannot be predicted by heritability estimates, so knowing that these boys are brothers doesn't allow us to make predictions.
D) Although intelligence has a genetic component, the boys are of different ages so we can't expect their scores to be similar.