$7.$ A $4-$year $\backslash (8\mathrm{.}5\backslash \%\backslash )$ coupon issue is callable starting in Year $1$ at par $(\backslash (\backslash$$ $100\backslash ))($that is$,$ the call price is $\backslash (\backslash$$ $100\backslash )).$ If the price exceeds $\backslash (\backslash$$ $100\backslash )$ the issue will be called. Suppose that you observe the following treasury yield curve spot rate $($one$-$year spot rates$)$ and an annual interest rate volatility of $\backslash (10\backslash \%\backslash ).$ Assuming a $25-$basis$-$point parallel shift in the treasury yield curve, find the effective duration and effective convexity of the callable T$-$note $($NOTE: This is a