Assembly-Line Balancing Problem-Table 1 Below
the Florida Appliance Company Is

Assembly-Line Balancing Problem-Table 1 below
The Florida Appliance Company is installing an assembly line to produce vacuum cleaners, and Patrick, as an operations manager, is responsible for balancing the line. The work elements to be performed are listed, along with their items and immediate predecessors.
$\begin{array}{|l|l|l|}\hline\text { Work } && \text { Immediate } \\ \text { Element } & \text { Time }(s e c) & \text { Predecessor (s) }\\\hline\text { A } & 60 & -- \\B & 40 & \text { A } \\\text { C } & 30 & \text { B } \\\text { D } & 20 & \text { B } \\\text { E } & 40 & \text { B } \\\text { F } & 60 & \text { C } \\G & 70 & \text { D } \\H & 50 & \text { F, G } \\\text { I } & 20 & \text { E } \\J & 60 & \text { H, I }\\\hline\end{array}$
-Use the information in Table 1. What is the efficiency using the longest-task-time rule?

A) Less than 85%
B) More than 85% but less than 91%
C) More than 91% but less than 93%
D) More than 93% but less than 95%