If in a certain code, ‘BRIDGE’ is written as ‘ACQSHJCEFHDF’, what is the code of POWER?

Given that code, ‘BRIDGE’ is written as ‘ACQSHJCEFHDF'

the above pattern has followed the letter before it  and after it has to be written as

Like  B is written as AC, R is written as QS, I is written as HJ, D is written as CE, G is written as FH, E is written as DF

then BRIDGE is written as 'ACQSHJCEFHDF' 

same as POWER is written as  like P is written as OQ, O is written as NP, W is written as VX, E is written as DF, R is written as QS

then POWER is written as 'OQNPVXDFQS'

therefore option (B) 'OQNPVXDFQS' Ans