Barbara Millicent Roberts LLC $($BMRL$)$ is a boutique advisory firm that specialises in macro$-$economic forecasts for their wealthy clients

According to BMRL$\text{'}$s analysis, the following are three possible future macro$-$economic environments

along with state$-$dependent total returns for three assets, $A,B$ and $M(M$ is the market$).$

Required: Calculate the forward$-$looking CAPM expected return for B$.$