A) MKO
B) QSO
C) VTX
D) DBF
Correct Answer: B
Solution :
\[M\xrightarrow{-2}K\xrightarrow{+4}O\] \[Q\xrightarrow{+2}S\xrightarrow{-4}O\] \[V\xrightarrow{-2}T\xrightarrow{+4}X\] \[D\xrightarrow{-2}B\xrightarrow{+4}F\]You need to login to perform this action.
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