Given below are two statements : one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A\) : When a body is projected at an angle \(45^{\circ}\), it's range is maximum. Reason \(R\) : For maximum range, the value of \(\sin 2 \theta\) should be equal to one. In the light of the above statements, choose the correct answer from the options given below :

1. A Both \(A\) and \(R\) are correct but \(R\) is NOT the correct explanation of \(A\)
2. B Both \(A\) and \(R\) are correct \(R\) is the correct explanation of \(A\)
3. C \(A\) is true but \(R\) is false
4. D \(A\) is false but \(R\) is true