[单选题]
How fast do you approach y:s0-wsd7q w2* x xnz7ff4 bqfwour image when you approach a +5 pzkd(cbs,xtabkdr-w6dcu n 4-)p /vertical plane mirror at a speekc pp-,wu d+ r/xktbz -d)cdbs6n( a54d of 2 m/s?
A. 1 m/s
B. 2 m/s
C. 4 m/s
D. none of the given answers
