$1.$ As of today, you have money to make a down payment on a house which you expect to buy in two years.$$ You are considering different ways to invest this money.$$ Due to the uncertainty, you do not want to invest in stocks.$$ Your choices are the following:$$

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$2-$year zero coupon corporate bond, rated AA from S&P

$2-$year interest paying coupon corporate bond, rated A from S&P

$5-$year Treasury bond, with semiannual coupons

$90$ Day Treasury Bill

$2-$year Corporate bond, single B rating from S&P$,$ with semiannual coupons

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Which bond will you invest in$?$ What factors did you consider in deciding the bond to invest in$?$