Prior to mass-production, cars were very expensive and only the rich could purchase them. Why did mass-production of the car allow everyone, not just the rich, to purchase it? O A. Less expensive cars were made and therefore they became cheaper. O B. Mass-production increased the supply of cars and the price of cars dropped as a result C. The middle class demanded a cheaper car, so Ford mass-produced cars. O D. The assembly slowed down the production of cars which made them more expensive.