The relative density of a material of a body is found by weighing it first in air and then in water. If the weight of he body in air is `W_(1) = 8.00 +- N` and the weight in water is `W_(2) = 6.00 +- 0.05 N`, then the relative density `rho_(r ) = W_(1)//( W_(1) - W_(2))` with the maximum permissible eror is
A. `4.00 +- 0.62%`
B. `4.00 +- 0.82%`
C. `4.00 +- 3.2%`
D. `4.00+- 5.62%`