Although Differences Between the UCR and the NCVS Abound, the Greatest

Although differences between the UCR and the NCVS abound, the greatest distinction between the two is:

A) the ability of the NCVS to identify crimes committed against those under the age of twelve.
B) the ability of the UCR to identify the social dimension of fear.
C) the ability of the UCR to measure unreported crime.
D) the ability of the NCVS to measure unreported crime.