C-08-Q131mediumsingle_mcqIf ∠PQR\angle PQR∠PQR of cyclic quadrilateral PQRSPQRSPQRS is 110∘110^{\circ}110∘, then ∠PSR\angle PSR∠PSR is—a70∘70^{\circ}70∘b110∘110^{\circ}110∘c