You Have Lunch with a Friend and She Tells You

You have lunch with a friend and she tells you that her office recently implemented flex-time hours. It has been a positive change at your friend's workplace, and you think that it would be great to have flex-timing at your office too. You decide to approach your boss about this possibility.
-Which of the following would be best to include in an email to your boss suggesting the idea?

A) I think a flex-time schedule would be good for me.
B) Flex-time would give me more free time.
C) I bet everyone would love having a more flexible schedule instead of the forced 9-5 work schedule.
D) In other offices, the flex-time schedule has increased productivity and decreased turnover.
E) It would make people happy if they could leave work early.