When Charmaine Was 10 Years Old,she Completed the Original Binet-Simon

Multiple Choice

When Charmaine was 10 years old,she completed the original Binet-Simon scale.She answered all the questions that a typical six-year-old would answer,but none of the questions a typical seven-year-old would answer.Based on this information,Charmaine's mental age would be

A) 10 years.
B) 6 years.
C) 8 years.
D) 60 years.