Siobhn is planning to purchase an Australian Treasury bond with a coupon rate (i2) of 3.77% p.a. and face value of $100. The maturity date of the bond is 15 May 2033. If Siobhan purchased this bond on 7 May 2018, what is her purchase price (rounded to four decimal places)? Assume a yield rate of 4.74% p.a. compounded halfyearly. Siobhn needs to pay 25.3% of coupon payments and capital gains in tax payments. Assume that all tax payments are paid immediately. a. $76.4885 b. $78.0963 c. $68.3213 d. $91.4288