If cars were required by law to have built$-$in navigation systems and had to be sold with a $10-$year warranty:

Question $3$Select one:

a$.$

both car buyers and car dealers would be better off at the expense of car manufacturers.

b$.$

the car buyers would be better off at the expense of the car dealers.

c$.$

both car buyers and car manufacturers would be worse off.

d$.$

the car manufacturers would be better off at the expense of the car buyers.