Wrich one of the following bonds would you select it you thought market interest rates were going to tall by 50 basis points over the noxt six months? a. A bond with a Macaulay duration of 6.46 years that's curently being priced to yeld 8.24% b. Abond weth a Macoulay duration of 21.69 years that's priced to yield 9.58% c. A bond with a Macaulay duration of 6.60 years thars priced to yield 6.68%