Endothon inc pays its employees once a month on the first Friday of the following month. monthly payroll is 600000 (20000 per day). November 30 falls on a Monday employees will be paid on Friday December 4 for Novembers wages. what is endothon's payroll expenses for November, assuming there are no holiday?

1. 520,000
2. 600,000
3. 640,000
4. 680,000