Let C be the center of the circle x2 + y2 - x + 2y = 11/4 and P be a point on the circle. A line passes through the point C, makes an angle of π/4 with the line CP and intersects the circle at the points Q and R. Then the area of the triangle PQR (in unit2 ) is :
(A) 2
(B) 2√2
(C) 8sin (π/8)
(D) 8 cos (π/8)