The following table details the tasks required for$$ Indiana$-$based Frank Pianki Industries to manufacture a fully portable industrial vacuum cleaner. The times in the table are in minutes. Demand forecasts indicate a need to operate with a cycle time of $10$ minutes. $1)$ a$-$b$)$ One of the possible assignment of tasks to workstations is shown correctly in $2)$ The efficiency of the assembly line with $3$ workstations $=\%($enter your response rounded

to two decimal places$).3)$ The goal is to have $100\%$ efficiency. Is this possible? $4)$ The theoretical minimum number of workstations $=($round your response up to the

ne$.$

Able number$).$