The correct option is B 23
For 1st hour, parking charge = $8.
For 2 hours, parking charge =$8+$6=$14.
For 3 hours, parking charge =$14+$3=$17.
For 4 hours, parking charge =$17+$3=$20.
For 5 hours, parking charge =$20+$3=$23.
$23 would be the parking charge of the car after 5 hours of parking the car.