Pi electrons from double bond → resonate → Carbocation shift
(a) Draw two resonance structures of the cation shown below, shifting only one electron pair in each step. Be sure to include the formal charge on structures B and C. Only move one double bond. Each resonance structure should contain only one charge- positive charge.
(b) Use curved-arrow notation on the given structure A to show its conversion to structure B, and then on structure B to show its conversion to structure C.