[单选题]
Light arriving at a concave mirror o6m /a- of mzkqpe- 14n)hscv1un a path thrq rj 2izu.(t),m ob6 u95jehirough the center of curvature is reflectju2.z omq6ji(i9uhbr,) 5reted
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.
