PZQW : NXOU :: FISK :?  Choose the correct choice:
A) EFPJ
B) FERI
C) DGQI
D) HKUM
E) HKUN
Difference of one alphabet on each side of proportion term. Answer is thus DGQI   ANSWER:DGQI
<result>C</result>
PZQW : NXOU :: FISK :?