An Investor Is Consider Four Different Opportunities, A, B, C

An investor is consider four different opportunities, A, B, C, or D. The payoff for each opportunity will depend on the economic conditions, represented in the payoff table below.
$$~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{ \text { Economic Condition } } \\\begin{array} { c} \text { Investment } & \begin{array} { c } \text { Poor } \\\text { (S1) }\end{array} & \begin{array} { c } \text { Average } \\\left( \mathbf { S } _ { \mathbf { 2 } } \right)\end{array} & \begin{array} { c } \text { Good } \\\left( \mathbf { S } _ { \mathbf { 3 } } \right)\end{array} & \begin{array} { c } \text { Excellent } \\\left( \mathbf { S } _ { \mathbf { 4 } } \right)\end{array} \\\text { A } & 50 & 75 & 20 & 30 \\\text { B } & 80 & 15 & 40 & 50 \\\text { C } & - 100 & 300 & - 50 & 10 \\\text { D } & 25 & 25 & 25 & 25\end{array}$$
-What decision would be made under minimax regret?