IQ of a person is given by the formulaIQ =(MA/CA) 100, where MA is mental age and CA is chronological age. If 40 IQ 120 for a group of 10 years old children, find the range of their mental age.

IQ of a person is given by the formulaIQ =(MA/CA) 100, where MA is m

1.	IQ of a person is given by the formula IQ =(MA/CA) 100, where MA is mental age and CA is chronological age. If 40 IQ 120 for a group of 10 years old children, find the range of their mental age.
A.	(9,16)
B.	[9,16]
C.	(4,12)
D.	[4,12]
Answer» E.