[单选题]
The critical angle fo;g ow*styb1 c8r a beam nxn.4:mw,,y u* dji frof light passing from water into air is $48.8^{\circ}$. This means that all light rays with an angle of incidence greater than this angle will be
A. absorbed.
B. totally reflected.
C. partially reflected and partially transmitted.
D. totally transmitted.
