Given a discount rate of 0%, which of the following has the greatest p

Given a discount rate of 0%, which of the following has the greatest present value? ONE, a series of 10 equal annual end-of-the cash flows of $100 each, TWO, just like ONE except the first 5 cash flows are only $50 but the last 5 cash flows are $150

, or THREE, just like ONE except the 10 $100 cash flows are at the beginning of the period.
A) ONE
B) TWO
C) THREE
D) The choices all have equal present values.

ANSWER

D