The NAS Report Regarding Correction of Test Bias in the General

The NAS report regarding correction of test bias in the General Aptitude Test Battery (GATB) concluded that

A) more effort would be necessary to completely eliminate the halo effect in test scoring.
B) raw scores had to be converted into interpretable standard scores.
C) test coefficients were too low to be acceptable criterion-related validity evidence.
D) nothing had to be changed in the practice of scoring the tests.