Under which condition does a light ray striking a concave mirror reflect off parallel to the principal axis? . . a. when the incident ray passes from a point anywhere between the center of curvature and the focal point . b. when the incident ray passes through the center of curvature . c. when the incident ray passes through the focal point . d. when the incident ray passes through a point beyond the center of curvature . e. when the incident ray passes through a point anywhere between the focal point and the vertex . can someone explain in advance