question_answer

Given \['p'\] is the exterior angle of \[\Delta PQR\] and \['q+r'\] is the sum of interior angles opposite to\['p'\]. Which of the following is true?

A) \[p+r=q\]                     

B) \[p=q+r\]         

C) \[p+q=r\]         

D)        \[r=q-p\]