2. On January 1,2017 , Walworth Co. purchased a new machine which it does not have to pay for until January 1, 2019. The total payment on January 1, 2019 will include both principal and interest. Assuming interest at a 10% rate, the cost of the machine would be the total 2019 payment multiplied by what time value of money factor? a. Future amount of 1 . b. Future amount of an annuity of 1 . c. Present value of 1 . d. Present value of annuity of 1 . e. none of the above