(a) Suppose the investor wants to achieve at least a 12% return. What is the least risky way of achieving this goal? (Round your numeric values to three decimal places.) (pApBpC)=() (b) Suppose the investor regards risk minimization as being five times more important than maximizing return. What portfolio would be most appropriate for the investor? (Round your numeric values to three decimal places.) (pApBpC)=()