Clark borrows $25000 on December 1st 2021. He has to be repay the amount in 15 equal monthly payments and the rate of interest is 12% convertible monthly. (a) Suppose Clark starts the payment from January 1st 2022. What is Clark's monthly payment? (b) What is the outstanding principal for Clark at the end of his 4th payment period? (c) If Clark starts making the payment from April 1st 2022 instead of Jan 1st 2022, what will be the monthly payment made by Clark? You should write the solution till second decimal place You can use the calculators for computations.