To Determine Whether Some IQ Test Is Biased Against Some

To determine whether some IQ test is biased against some group, the most decisive information would be

A) whether that group has as high a mean score on the test as other groups do.
B) whether that group's members generally perform better in school and other situations than their test scores predict.
C) whether members of that group believe the test is fair.
D) whether the authors of the test intended the test to be fair.