Each of the following actions by a licensed real estate broker would be considered a violation of the Sherman Anti-Trust Act, EXCEPT: Select one: a. Price fixing b. Boycotting c. Tie-in arrangements d. Commingling The interest rate charged on an adjustable rate mortgage at any given time will be computed by which of the following methods? Select one: a. The index rate only b. The index rate plus the margin (or spread) c. The start rate plus the index rate plus the margin d. The prime rate plus the rate cap