Question $4(25$ pts$).$ A $$2,000$ portfolio is invested in three stocks and one risk$-$free asset. Five hundred dollars is invested in stock A which has a beta of $1\mathrm{.}3.$ Six hundred dollars is invested in Stock B which has a beta of $\mathrm{.}80.$ The rest of the portfolio is divided evenly between stock C and the risk$-$free asset. What is the beta of stock C if the portfolio is equally as risky as the market?