The client wants to minimize risk subject to the requirement that the annual in$-$ come from the investment be at least $$60,000.$ According to Inniss risk measure$-$ ment system, each unit invested in the stock fund has a risk index of $8,$ and each unit invested in the money market fund has a risk index of $3$; the higher risk index associated with the stock fund simply indicates that it is the riskier investment. Inniss client also specified that at least $$300,000$ be invested in the money market fund. LO $2,4,5$a$.$ Determine how many units of each fund Innis should purchase for the client to minimize the total risk index for the portfolio.b$.$ How much annual income will this investment strategy generate?c$.$ Suppose the client desires to maximize annual return. How should the funds beinvested?