Corporation acquired a building for $500,000, paying $100,000 in cash and signing a mortgage for the remaining balance. The mortgage has an annual interest rate of 6% and a term of 10 years, with monthly payments. Requirements: a. Determine the amount of mortgage payable. b. Calculate the monthly mortgage payment. c. Prepare the journal entry to record the acquisition of the building. d. Determine the total interest expense for the first year.