What Would Be One Way to Determine the Validity of an IQ

Multiple Choice

What would be one way to determine the validity of an IQ test?

A) See whether most people get about the same score on a test and then a retest.
B) See whether scores on the test accurately predict performance in school.
C) See whether scores on the test follow the normal distribution.
D) See whether scores on the odd numbered items correlate with the even numbered items.