Mastermind International$$s bonds have a current market price of $$1,300.$ The bonds have a $15\%$ annual couponpayment, a $$1,000$ face value, and $10$ years left until maturity. The bonds may be called in $5$ years at $109\%$ of face value$($call price $=$ $$1,090).$a$)$ What is the yield to maturity?b$)$ What is the yield to call if the bonds are called in $5$ years?c$)$ Between YTM and YTC$,$ which yield might investors expect to earn on these bonds?The bond$$s indenture indicates that the call provision gives the firm the right to call them at the end of each yearbeginning in Year $5.$ In Year $5,$ they may be called at $109\%$ of face value, but in each of the next $4$ years the callpercentage will decline by $1$ percentage point. Thus, in Year $6$ they may be called at $108\%$ of face value, in Year $7$ theymay be called at $107\%$ of face value, and so on$.$d$)$ If the yield curve is horizontal and interest rates remain at their current level, when is the latest that investorswould expect the firm to call the bonds?