A clock is set to the right time at 4:00 AM on Thursday. If it gains 20 seconds in every 3 hours, then what is the time shown on the clock at 8:30 PM on Friday night?

A

8 hours 30 minutes 30 seconds PM

B

9 hours 34 minutes PM

C

8 hours 34 minutes PM

D

8 hours 34 minutes 30 seconds PM