question_answer

P and Q are points on\[l\]and m respectively such that \[PQ\bot l\] and \[l||m\,.\] R is a point on a line n in the same plane such that\[\overline{PQ}=\overline{QR}.\] Which of the following is true?

A)  \[l||n\]              

B)         \[m||n\]

C)  Both [a] and [b] 

D)         Neither [a] nor [b]