Aptitude Tests Are Designed to ____,While Achievement Tests Are Designed

Aptitude tests are designed to ____,while achievement tests are designed to ____.

A) measure a child's intelligence quotient;compare a child's mental age with their chronological age
B) assess the accumulation of knowledge;assess how quickly that knowledge can be retrieved from memory
C) predict a person's capacity for learning;assess what a person has already learned
D) assess what a person has already learned;predict a person's capacity for learning