Diesel engines are a significant source of air pollution in cities. A city authority introduced a charge for diesel taxis entering the city. What would be the most likely effects on the demand and supply of taxi journeys into the city?
- Ademand for taxi journeys fall; supply of taxi journeys fall
- Bdemand for taxi journeys fall; supply of taxi journeys remain unchanged
- Cdemand for taxi journeys remain unchanged; supply of taxi journeys fall
- Ddemand for taxi journeys rise; supply of taxi journeys fall