Assertion (A) : If three angles of a quadrilateral are `130^@,70^@` and `60^@` then the fourth angle is `100^@`
Reason(R) : The sum of all the angle of a quadrilateral is `360^@`
The correct answer is : (a) /(b)/(c )/(d).
A. Both Assertion (A) and Reason (R ) are true and Reaoson (R ) is a correct explanation of Assertion (A) .
B. Both Assertion (A) and Reason (R ) are true but Reason (R ) is not a correct explanation of Assertion (A).
C. Assertion (A) is true and Reason (R ) is false.
D. Assertion (A) is false and Reason (R ) is true.
