Assign work elements $($tasks$)$ to workstations and determine the actual number of workstations required to balance the manufacturing line. Be sure to not violate precedence when determining the next task to assign to a workstation. If there are multiple tasks that are eligible to be assigned to a workstation, use the heuristic rule of: Assign the tasks in alphabetical order. $($You$\text{'}$ll see this may not be the best heuristic rule to use.$)$

The number of workstations required and the efficiency of the line balance is:

Group of answer choices

$4$ workstations with an efficiency of $1\mathrm{.}00$ or $100\%$

$5$ workstations with an efficiency of $1\mathrm{.}00$ or $100\%$

$5$ workstations with an efficiency of $0\mathrm{.}733$ or $73\mathrm{.}3\%$

$4$ workstations with an efficiency of $0\mathrm{.}733$ or $73\mathrm{.}3\%$