Mercer's Use of an Adaptive Functioning Measure in Conjunction with Standardized

Mercer's use of an adaptive functioning measure in conjunction with standardized intelligence tests was important because it showed that

A) many minority children who had been classified as mentally retarded could function in their environment and perform adaptive skills, such as household tasks and holding a job.
B) many European American and minority children had been misclassified as mentally retarded.
C) European American children classified as mentally retarded performed better on tests of adaptive abilities than the minority children classified as mentally retarded.
D) low IQ scores are reliable predictors of mental retardation in minority children.