[单选题]
An X-ray technician takjcoa ,xu)x+( ier -aan573 juxrd8 /es0hr-ztd s an average of ten X-rays per day and receives 2.5 mrad per X-ray. What is the total dosd uza8rn3hds7- 5 r-r0eajxt/e the technician receives in 250 working days?
A. $2.50 \; rem$
B. $5.00 \; rem$
C. $6.25 \; rem$
D. $7.75 \; rem$