A ssertion (A) : In a trapezium PQRS,PQ ||\( R S \) and non paralle...

A ssertion (A) : In a trapezium PQRS,PQ ||\( R S \) and non parallel sides are equal. If diagonals intersect at point ' \( \mathrm{O}^{\text {', }} \) then \( \mathrm{OP} \times \mathrm{OR}=\mathrm{OQ} \times \mathrm{OS} \).
Reason (R): If non-parallel sides of a trapezium are equl then this will be a cyclic quadrilateral.
a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
b) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
c) Assertion (A) is true but Reason (R) is false.
d) Assertion (A) is false but Reason (R) is true.