Using the $GBM$ Model, forecast the values $ofKLCl$ for the weeks April $2nd,$

$2023$ until Oct ${31}^{st},2024.$ The formula $is$

$S_{t+1}=S_t$exp$\{(-\frac{{}^2}{2})(\frac{1}{52})+\sqrt[\phantom{2}]{\frac{1}{52}}N(0,\frac{1}{52})\}$

$a.$ Plot the $KLCl$ index values given $by$ the market and the forecasted

value together with its $90\%$ Confidence Interval. The confidence

interval can $be$ computed using the formula Forecasted Price $$exp$+-1\mathrm{.}96$Standard Deviationr,

$a.$ Using the formula $=\frac{{}^M-r}{{}^2},$ compute the Market Price $of$ Risk for $KLCl,$

$and$ plot $it.$

$b.$ Define the Market Price $of$ Risk and comment $on$ the Market Price $of$

Risk for $KLCl.$

Please write $R$ programming code $or$ Excel operation please