The assembly line whose activities are shown below has a cycle time of 8 minutes. Draw the precedence graph and find the fewest possible number of workstations. Then arrange the activities at the workstations for the purpose of balancing the line. Balance by the longest task method. \begin{tabular}{|c|c|c|} \hline Task & Time (Minutes) & Predecessor \\ \hline A & 2 & \\ \hline B & 5 & A \\ \hline C & 1 & B \\ \hline D & 4 & B \\ \hline E & 5 & C \\ \hline F & 1 & C \\ \hline G & 3 & D,E,F \\ \hline H & 6 & G \\ \hline \end{tabular}