Which of the following people is engaged inwhich of the following people is engaged in bartering?
a. victor, who deposits half of his weekly paycheck in a savings account and spends the other half on food and rent
b. roz, who spends half of the day taking care of her elderly parents and the other half writing articles for a local newspaper
c. charlotte, who wonders if she should go to trade school to become certified in auto mechanics or accounting
d. hanif, who gives his neighbor carla his freshly grown tomatoes in exchange for her expert lawn care bartering?