Determine the net present value, internal rate of return, payback period, and profitability index of the proposed investment from the information below.

\begin{tabular}{|c|c|c|c|c|} \hline & Year 1 & Year 2 & Year 3 & Year 4-6 \\ \hline Sales In Units & 9,000 & 15,000 & 18,000 & 22,000 \\ \hline Sales In dolllars & $315,000 & $525,000 & $630,000 & $770,000 \\ \hline Variable expenses & 135,000 & 225,000 & 270,000 & 330,000 \\ \hline Contribution margin & $180,000 & $300,000 & $360,000 & $440,000 \\ \hline \multicolumn{5}{|l|}{ Fixed Expenses: } \\ \hline er Salaries and Oth & 85,000 & 85,000 & 85,000 & 85,000 \\ \hline Advertising & 180,000 & 180,000 & 150,000 & 120,000 \\ \hline Total Fixed expenses & 265,000 & 265,000 & 235,000 & 205,000 \\ \hline NetcashInflow(outflow) & $85,000 & $35,000 & $125,000 & $235,000 \\ \hline \end{tabular}