Statement A (Assertion): A tangent to a circle is perpendicular to the radius through the point of contact.
Statement R( Reason): The length of tangents drawn from an external point to a circle are equal.
(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 and 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​