[单选题]
On a day when the speed of sounhio --wr nq1:-9khryxd in air is 340mpg+ l 4j5)il /ev+cxr m/s, a bat emits a shriek whose echo reaches it 0.0250 s later. How far away was the4ixr j/5gl+ c +mlepv) object that reflected back the sound?
A. $4.25 \; m$
B. $8.50 \; m$
C. $0.425 \; m$
D. $0.850 \; m$
