Consider a branch of the hyperbola x2−2y2−22x−42y−6=0 with vertex at the point A. Let B be one of the end points of its latus rectum. If C is the focus of the hyperbola nearest to the point A, then the area of the triangle ABC is
a. 1−32
b. 23−1
c. 1+32
d. 23+1