4 Which of the following goods are most likely to result in a large number of dissatisfied customers :

(a) light bulbs,

(b) food at a local restaurant,

(c) food at a restaurant along an interstate highway,

(d) automobile repair service,

(e) used cars,

(f) plumbing services,

(g) used automatic dishwashers, (h) used sofas, (i) television repair service? Explain your answer.