A) \[{{H}_{3}}C-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-OON{{O}_{2}}\]
B) \[C{{H}_{2}}=CHCHO\]
C) \[C{{F}_{2}}C{{l}_{2}}\]
D) \[{{O}_{3}}\]
Correct Answer: C
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