Which of the following project developments may lead to better construction labor productivity than what have been initially expected?

A$.$ Contractor plans to increase workweek from $5$ days per week to $6$ days per week, $10$ hours each day.

B$.$ Owner approves a series of project changes that creates more work to do$.$

C$.$ Project is seeing much less absenteeism and turnover than has been seen on other projects in the area.

D$.$ Project is experiencing the hottest summer on record.