Why Has the Ratio Method of Computing IQ Been Replaced

Multiple Choice

Why has the ratio method of computing IQ been replaced by the deviation method?

A) The deviation method accommodates the fact intelligence does not keep increasing at the same rate as chronological age throughout adulthood.
B) The deviation method is less culturally biased than is the ratio method.
C) Newer tests have made the ratio method of computing IQ obsolete, since the number of questions answered correctly is no longer an important consideration in determining a person's intelligence.
D) Computers can now automatically score tests so the computation of mental age can be done much faster.