Task Predecessor Task time

Wash $1$ Min.

Paint $2$ Min.

Buff Paint $2$ Min.

Drain Wash $1$ Min.

Saw Buff $4$ Min.

Cool Drain $4$ Min.

Drill Saw $1$ Min.

Glue Cool, Drill $2$ Min.

If my Takt time is $4$ minutes, which of the following statements is not true

Group of answer choices

The most efficient this line can ever be is $85\%$

You can never put Wash and Buff together at a workstation

The theoretical number of workstations is $4$

You cannot balance this line in $4$ workstations