1.  This term is given as one of the alternatives given below each question. Find out this term.
ASTN : ZTSO : : UIOZ  : ?

A. LRRC
B. TJNA
C. NTVC
D. LTTC

Answer: Option D

Explanation:

The first and third letters of the first group are each one step backward while the second and fourth letters are each moved one step forward to obtain the corresponding letter of the second group.