Identify whether each of the following transactions will take place in the factor market or in the product market and whether households or firms are supplying the good or service or demanding the good or service.
a. George buys a Tesla Model S.
b. Tesla increases employment at its Fremont plant.
c. George works 20 hours per week at McDonald's.
d. George sells the land he owns to McDonald's so that it can build a new restaurant.