Corbin, Who Is 10 Years Old, Took a Test That

Multiple Choice

Corbin, who is 10 years old, took a test that shows he has a mental age of 15. According to intelligence measurement theorists, what can be concluded from this information?

A) Corbin is less intelligent than other 10-year olds.
B) Corbin is of average intelligence for his age.
C) Corbin is more intelligent than other 10-year olds.
D) Corbin is more intelligent than 15-year-olds.