Line segment PQ is a diameter of circle A. Determine the measure of central angle x.
Is it-A- 22 degrees?
B- 68 degrees? 
C-112 degrees? 
Or D- 248 degrees?
And why?
Please help! This is timed! 
I give Brainliest too!.!!.!!!
                                             
                                          
                                          
                                       