Which One of the Following Will Increase the Present Value

Which one of the following will increase the present value of a finite stream of even cash flows? Assume a positive rate of return.

A) Moving every cash flow one time period further into the future
B) Decreasing the amount of each cash flow
C) Increasing the Time 2 cash flow by $100 and lowering the Time 3 cash flow by $100
D) Moving the Time 1 cash inflow to Time 2
E) Increasing the discount rate