[单选题]
99.26: A beam of lig5i xd8bsa b9(fht travels02xwt101 et9 wqvq aging 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?
