Please show work for this problem.

You dilute the river water 10 times for the analysis of SDS concentration. The instrument measures an average molar concentration of SDS in the diluted river water to be 0.01689 mol/L. The molar mass of SDS is 288.4 g/mol. What is the mass concentration of SDS in the original river water?

A. 5.86 x 10^-4 g/L

B. 4.87 g/L

C. 5.86 x 10^-5 g/L

D. 48.7 g/L