rotation matrix along z-axis with angle theta (anticlockwise is given by )
X= Xcosθ -Y sinθ
y= X sinθ +Ycosθ
which can be written in homogeneous form as below
to make it clockwise just replace θ by -θ so cos(-θ)=cosθ and sin (-θ)=-sinθ
so in above matrix leave cos θ as it is and Change sinθ by -sin θ and -sinθ by sinθ
hence ans is C