If f (x) = \\begin{array}{ccc}1 & \when 0 &lt\ x \leq {3\pi\end{array}/4 ; 2 \sin 2/9 x , \when {3\pi}/4 < x < \pi

Correct Answer is : f (x) is continuous at x = 3π4

f (x) is continuous at x = {3\pi}/4

f (x) is discontinuous at x = {3\pi}/4