In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options.

KM5, IP8, GS11, EV14, ?

A. BX17
B. BY17
C. CY18
D. CZ17
E. CY17
Answer: E . CY17


The first letter of each term is moved two steps backward and
the second letter is moved three steps forward to obtain the corresponding letters of the nextterm.
The number in each term is 3 more than that in the preceding term.