Which one among the following resonating structures is not correct?

Consider the following statements. Which of the following statement$(s)$ is/are correct?
$(a)$ $CH_2=CH-CH_2^+$ is more stable than $CH_3-CH^+-CH_3$.
$(b)$ Naphthalene has two types of $C-C$ bonds.
$(c)$ The structures shown are both permissible resonating structures.
$(d)$ The phenyl anion is less stable than the cyclohexadienyl anion shown.

Select the correct statement for the given structures of anilinium ion:

Which one of the following compounds does not exhibit resonance?

Compare the carbon-carbon double bond rotation energy for the following compounds $A$,$B$,and $C$:

Resonance effect is not observed in