Select the option that is related to the fourth term in the same way as the first term is related to the second term.
QMDFEHKNJ : FDMQVJNKH :: ? : HELIOPTER

Given that 

QMDFEHKNJ : FDMQVJNKH :: ? : HELIOPTER

QMDFEHKNJ: FDMQVJNKH is following a pattern

first  4  and last 4 alphabets are written in reverse order and the middle alphabet  is written as opposite alphabet 

therefore  HELIOPTER is written as the same pattern  ILEHLRETP (first 4 and last 4 alphabets are written in reverse order and the middle alphabet is written as an opposite alphabet )

then? = ILEHLRETP Ans