What is the future value (as at year 4) of the following cash flows, given an interest rate of 4% p.a.?

What is the future value (as at year 4) of the following cash flows, given an interest rate of 4% p.a.?

Year      0            1            2            3             4      Cash flow    $100$380$270  

Select one:

a. $780

b. $773

c. $819

d. $804