I ONLY NEED HELP WITH QUESTION A AND B Answer any three parts of Question $1.$ All questions carry equal marks. Your answer for each part should be no longer than two pages long.

$($a$)$ Consider Portfolio $1$ and Portfolio $2.$ Both portfolios have a beta of $1\mathrm{.}6.$ The standard deviation of Portfolio $1$ is $12\%,$ and Portfolio $2$ standard deviation is $18\%.$ What does this information tell you about the position of both portfolios with respect to the capital and security market lines? Explain your answer.

$($b$)$ Describe and graphically illustrate Markowitz's portfolio optimization solution if a risk$-$free asset is not available.

$($c$)$ Consider Table $1.$ Calculate the expected return and standard deviation risk of a portfolio comprised of stock $1,$ stock $2,$ stock $3,$ and stock $4.$ Detail all calculations.

$\backslash$table$[[$Table $1],[,$Expected return $(\%),$Standard deviation $(\%),$Weight $(\%)],[$Stock $1,7\%,9\%,0\mathrm{.}3],[$Stock $2,10\%,11\%,0\mathrm{.}2],[$Stock $3,9\%,8\%,0\mathrm{.}4],[$Stock $4,5\%,5\%,0\mathrm{.}1],[$Covariance Matrix$],[,$Stock $1,$Stock $2,$Stock$]]$