A team organizing a university career fair has a list of companies along with their respective arrival times and their duration of stay. Only one company can present at any time. Given each company's arrival time and the duration they will stay, determine the maximum number of presentations that can be hosted during the career fair.

Which of the following best explains why buying a house is more beneficial than renting? a. buying is a personal investment while renting involves giving money to the landlord. b. the monthly payments on a mortgage are generally lower than rent on an apartment. c. it's easier to sell a house than it is to get a landlord to break a rental agreement. d. housing prices can go up and down quickly in comparison to the level of rents.