An hourly employee's schedule is 8:00am to 4:30pm with a thirty minute unpaid lunch break. The employee receives overtime compensation after 40 hours in a workweek. The employer docks employees by a full quarter hour (15 minutes) when they start work more than 7 minutes after the start of their scheduled shift. This employer's docking practice is: A. definitely illegal under FLSA B. definitely legal under FLSA C. legal under FLSA as long as the employee's time is also rounded up a full quarter hour when the employee begins 8 to 14 minutes before or ends 8 to 14 minutes after their scheduled shift D. not covered under FLSA