The Sanchez Company purchased a delivery truck on February 1, 2018. The purchase agreement required Sanchez to pay the total amount due of $15,000 on February 1, 2019. Assuming an 8% rate of interest, the calculation of the present value of the truck would involve multiplying $15,000 by the: a) Present value of $1. b) Present value of an ordinary annuity of $1. c) Future value of $1. d) Future value of an ordinary annuity of $1.