A cab company charges $12 per mile for a lift to the airport. What change would the company make to their charges to make this a non proportional situation? (1 point) Responses Charge $4 per mile instead of $12 Charge $4 per mile instead of $12 Charge a flat rate of $20 and then $12 per mile Charge a flat rate of $20 and then $12 per mile Charge $15 per mile instead of $12 Charge $15 per mile instead of $12 No changes are needed