[单选题]
99.26: A beam of light trpu3,/a. dxc+*;.zmhlfp fy s lv2s26 0w/ txe*mpopb faveling in glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?
