You Are a Hotel Manager and You Are Considering Four

You are a hotel manager and you are considering four projects that yield different payoffs,depending upon whether there is an economic boom or a recession.The potential payoffs and corresponding payoffs are summarized in the following table. $$\begin{array} { | l | l | l | } \hline \text { Praject } & \begin{array} { l } \text { Bamn } \\( 50 \% ) \end{array} & \begin{array} { l } \text { Recession } \\( 50 \% ) \end{array} \\\hline \text { A } & \$ 20 & - \$ 10 \\\hline \text { B } & - \$ 10 & \$ 20 \\\hline \text { C } & \$ 30 & - \$ 30 \\\hline \text { D } & \$ 50 & \$ 50 \\\hline\end{array}$$ The variance in the returns of project B is:

A) 900.
B) 225.
C) 0.
D) 1,600.