Lester's rented some equipment at a cost of $800 for Years 1 through 3 and $900 for Years 4 and 5. Which of these correctly depicts a portion of the present value of multiple annuities time line?

a. Year 1 has two cash flows in the amounts of $900 and $100.
b. Year 4 has two cash flows in the amounts of $800 and $100.
c. Year 1 has one cash flow in the amount of $800.
d. Year 3 has one cash flow in the amount of -$800.