Consider a situation with $4$ assets making up the entire economy and the following ANNUAL expected rates of return and variance$-$covariance matrix:

$\backslash$table$[[0\mathrm{.}12],[0\mathrm{.}16]]$

Find the expected return and standard deviation of the efficient Market portfolio, assuming that CAPM holds and that the riskless rate Rf$=8\%($Annual$).$