For each of the following situations, indicate the liability amount. if any, which is reported on the balance sheet of Hirst. Inc., at December 31, 2018.

a. Hirst owes $110,000 at year-end 2018 for its inventory purchases.

b. Hirst agreed to purchase a $28,000 drill press in January 2019.

c. During November and December of 2018. Hirst sold products to a firm with a 90-day warranty against product failure. Estimated 2019 costs of honoring this warranty are $2,200.

d. Hirst provides a profit sharing bonus for its executive, equal to 5%  of its reported pretax annual income. The estimated pretax income for 2018is $600,000. Bonuses are not paid until January of the following year.