C) What will be the initial margin of each investor? \begin{tabular}{|l|r|r|r|} \hline & \multicolumn{1}{|l|}{ John } & \multicolumn{1}{l|}{ Jack } & \multicolumn{1}{l|}{ Julia } \\ \hline Investors' Expectation About the future & \multicolumn{1}{|l|}{ Bullish } & \multicolumn{1}{l|}{ Bearish } & \multicolumn{1}{l|}{ Bullish } \\ \hline The money investors have & $50,000 & $100,000 & $150,000 \\ \hline The Broker Loan & $50,000 & $150,000 & $225,000 \\ \hline Stock Price At time 0 & $100 & $50 & $75 \\ \hline Stock Price At time 1 & $120 & $40 & $30 \\ \hline \end{tabular}