[单选题]
99.26: A beam of light traveling 1)gp 6 md 3 ,752lh.+vu ibngevsjouvbin glass, y8aaq:hbr-k ($n_g$=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?
