[单选题]
An X-ray technician hnp4 d. ry17l ;gi2dobtakes axvf g,4ega3 -fn average of ten X-rays per day and receives 2.5 mrad per X-ray. What is the total dose the techniciav,-fe 4g3af xgn receives in 250 working days?
A. $2.50 \; rem$
B. $5.00 \; rem$
C. $6.25 \; rem$
D. $7.75 \; rem$