Which of the Following Does Flextime Involve?​

Which of the following does flextime involve?​

A) It involves permitting certain employees to select different starting and ending times within a five-day workweek.
B) It involves allowing employees to take a certain number of leaves throughout the year.
C) It involves paying certain employees for working extra time throughout a five-day work week.
D) It involves permitting certain employees to select convenient days to work, not necessarily within the five-day workweek.