A corporate bond with a coupon rate of 7% is maturing in 18 years. The bond has a call provision of "after 12 at 115" (i.e. with 12 years of call protection and 15% call premium). If you buy the bond at a market price of $449.50, what would be the yield if you expect the bond will be called? O 19.09% O 18.51% O 18.32% O 9.64% 19.28%