As part of Canyon Hill's Preventative Maintenance Program, shower heads are to be replaced. There are $104$ showers in the complex. What is the best way to manage this project?.

Replace shower heads on an as needed basis, such as when a resident calls to complain of leaks or rust.

Spread the task over several weeks. If the maintenance staff can replace $8$ shower heads each week, then the task can be completed in only $13$ weeks.

Spend extra budget money on a vendor to complete the task in one day, so it is not looming over the maintenance staff.

Instruct the maintenance staff to replace shower heads if they have available time. Since this is preventative, it does not take priority over more urgent services.