Joanna plans to pay off a debt by payments of $1600 one year from now, $1800 eighteen months from now, and $3000 thirty months from now. You want to determine the single payment now that would settle the debt if money is worth 8% p.a. compounded semi-annually. Find i (periodic rate) Select one: a. 0.02 O b. 0.04 D C 8 d. 0.08 e. 2