MJ Company purchases a machine that has a sales price of $75,000 by taking out a $40,000, 8%, 6-month note payable. The rest of the amount is paid in cash. The machine is purchased on October 1st of 2021, and the note and interest are due on March 31st, 2022. Required: a) Record a journal entry on October 1st, 2021. b) Record a journal entry on December 31st, 2021. c) Record a journal entry for the interest payment on March 31st, 2022. d) Record a journal entry for the principal payment on March 31st, 2022.