Which sentence demonstrates the appropriate level of formality to use when communicating with coworkers?

a. Please remember to turn off your computer at the end of the day.
b. I would like to request your cooperation in ensuring that the computer is shut down at the termination of business hours.
c. Failure to properly shut down the computer will eventuate in technical difficulties.
d. Hey, seriously, dont leave the computer on.

Question

Which sentence demonstrates the appropriate level of formality to use when communicating with coworkers? 
  
 a. Please remember to turn off your computer at the end of the day. 
b.  I would like to request your cooperation in ensuring that the computer is shut down at the termination of business hours. 
c.  Failure to properly shut down the computer will eventuate in technical difficulties. 
 d. Hey, seriously, dont leave the computer on.

elcna · Answer

Well, D. is too "rude" in a sense with co-workers, C. is a little too formal, as well as B, so the only answer left is?

anonymous · Answer

A. sounds formal
B. sounds "sarcastically" formal
C. sounds like a threat XD
D. sounds like talking to teenagers. :)

anonymous · Answer

What do you think? @stephaniebenitez