3.3 A bracket is made up of the following components: one A part and three B parts. Each B part is made up of two C parts and one D part. Each C part is made up of two E parts. The master production schedule shows a demand of 60 units in week 6 and a demand of 100 units in week 7 . The lead times of the components are given below. [TURN OVER] 61 EPT1601 3.3.1 Draw a time-phased product structure tree for the bracket. 3.3.2 Develop a gross material requirements plan for the bracket. (Use the table on the next page to answer the question). \begin{tabular}{|c|c|c|c|c|c|c|c|} \hline & & \multicolumn{6}{|c|}{ Week } \\ \hline & 1 & 2 & 3 & 4 & 5 & 6 & 7 \\ \hline Bracket & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hline A & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hline B & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hline C & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hline D & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hlineE & & & & & & & \\ \hline Required date & & & & & & & \\ \hline Order release & & & & & & & \\ \hline \end{tabular}