[单选题]
Light arriving at a concave mirror on a path th2ha3 amy2hd0+g i xzn.sh5 js+rough the center of1ycl b0r.fs wy. + ghh;c;0hohsev5u3 curvature is refl3c; s01cwryuog0.eb;hh+hs.fl vyh 5 ected
A. back parallel to the axis.
B. back on itself.
C. through the focal point.
D. midway between the focal point and the center of curvature.
