[单选题]
A spherical mirror on which reflection takes pre4h-;ln-*1 ssnloz wlace on the out1k2t:d(1usli;8zi. ybab o xoer surface of the spherical shape is referred to a1zt.1su;oa2k 8x l: bob(iiy ds a
A. convex mirror.
B. concave mirror.
C. plane mirror.
D. double-sided mirror.
