You plan to invest $300 today and $500 three years from today. Two years from today, you plan to withdraw $50. Which of these is a correct statement regarding a time line for computing the future value of your cash flows four years from today?

The cash flow at year 4 is a negative $500.

The cash flow at year 3 is a negative $500.

The cash flow at year 2 is a negative $50.

The cash flow at time 0 is a positive $300.