A) Parking in a bus zone

B) Parking on City Hall Steps

C) Misuse of a disabled placard

D) Parking on railroad tracks

E) Driving through and parking on a parade route

F) Parking in a crosswalk

G) Parking in Mayor Lee’s space

 (I left my heart, and my wallet, in San Francisco.)

The Answer is C

 Misuse (which includes "borrowing") of a disabled placard or plate will cost you $935.