Why Have Psychologists Encountered Difficulties with Using Intelligence Tests with Children

Why have psychologists encountered difficulties with using intelligence tests with children from different cultural backgrounds?

A) The children did not respond to the person giving the examination because they had been instructed by their parents not to trust that individual.
B) The children tended to resist answering the questions because they were all written in English.
C) The tests were too easy for most children,irrespective of background,and thus were not a valid measure of intellectual skill.
D) The tests did not account for those backgrounds and led to stereotypes about the intelligences of kids from specific racial and ethnic groups.