Problem: School has been paying the UBIT every year. To reduce or eliminate this year's tax liability, School might: a. Conduct the profit-making activities on a regular basis. b. Relate the profit-making activities to its educational purpose. c. Both "Relate the profit-making activities to its educational purpose" and "Conduct the profit-making activities on a regular basis". d. Neither "Relate the profit-making activities to its educational purpose" nor "Conduct the profit-making activities on a regular basis".