6. Figure 11.32 shows a partially completed MPS record for 2 -inch pneumatic control valves. Suppose that you receive the following orders at right for the valves (shown in the order of their arrival). As they arrive, you must decide whether to accept or reject them. Which orders would you accept for shipment? \begin{tabular}{c|c|c} \hline Order & Amount (Units) & Week Requested \\ \hline 1 & 15 & 2 \\ \hline 2 & 30 & 5 \\ \hline 3 & 25 & 3 \\ \hline 4 & 75 & 7 \\ \hline \end{tabular}