The difference between ZRP and HRP of a physical balance when 47.86 g of a substance is placed in its pans is 3. When 10 kg is added in its pans the difference between HRP and LRP is obtained as 5. The most accurate mass of the body is `"_______"` g.
A. 47. 875
B. 47. 845
C. 47.866
D. 47.854
