An Assembly Line Has to Perform 10 Work Elements, Whose

An assembly line has to perform 10 work elements, whose time requirements follow below. An operations analyst has found a solution using some heuristics. The solution follows below. Solution $$\begin{array} { | l | l | l | l | } \hline \begin{array} { l } \text { Work } \\\text { Elements }\end{array} & \text { Time (sec) } & \text { Station } & \begin{array} { l } \text { Work } \\\text { Elements } \\\text { Assigned }\end{array} \\\hline \text { A } & 45 & 1 & \text { A, B, C } \\\text { B } & 30 & 2 & \text { D, E } \\\text { C } & 15 & 3 & \text { F, H } \\\text { D } & 30 & 4 & \text { G, I } \\\text { E } & 50 & 5 & \text { J } \\\text { F } & 40 & & \\\text { G } & 30 & & \\\text { H } & 30 & & \\\text { I } & 60 & & \\\text { J } & 80 & & \\\hline\end{array}$$ If the cycle time of the line is 90 seconds, what is the efficiency of the assembly line?

A) less than 85%
B) greater than 85% but less than 90%
C) greater than 90% but less than 95%
D) greater than 95%