The Concept of Flex Hours Is One Where

The concept of flex hours is one where

A) employees can choose to come to work or not
B) employees can come and go from work as they please so long as they get their job done
C) employees can have variable start and stop times
D) employees are permitted to schedule their workweek so long as it is within a set range of hours each day
E) the employer can require employees to come to work at different hours every day