$($Security market line$)$ You are considering the construction of a portfolio comprised of equal investments in each of four different stocks. The betas for each stock are found below:

$\backslash$table$[[$Asset$,$Beta$],[$A$,2\mathrm{.}30],[$B$,1\mathrm{.}10],[$C$,0\mathrm{.}55],[$D$,-1\mathrm{.}30]]$

$($Click on the icon $$ in order to copy its contents into a spreadsheet.$)$

a$.$ What is the portfolio beta for your proposed investment portfolio?

b$.$ How would a $25$ percent increase in the expected return on the market impact the expected return of your portfolio?

c$.$ How would a $25$ percent decrease in the expected return on the market impact the expected return on each asset?

d$.$ If you are interested in decreasing the beta of your portfolio by changing your portfolio allocation in two stocks, which stock would you decrease and which would you increase? Why?

a$.$ The portfolio beta for your proposed investment portfolio is $($Round to three decimal places.$)$

b$.$ A $25\%$ increase in the expected return on the market will cause the expected return of your portfolio to $1$ by $.($Select from the drop$-$down menu and round the answer to two decimal places.$)$

c$.$ A $25\%$ decrease in the expected return on the market will have the following impact on the expected return on each asset:

Asset A would by $\%.($Select from the drop$-$down menu and round the answer to two decimal places.$)$

Asset B would by $\%.($Select from the drop$-$down menu and round the answer to two decimal places.$)$

Asset $C$ would by $\%.($Select from the drop$-$down menu and round the answer to two decimal places.$)$

Asset D would by $\%.($Select from the drop$-$down menu and round the answer to two decimal places.$)$