urgent,plss ! Copper sulfate from a processed ore containing inert solids and copper sulfate is extracted with pure water in a countercurrent multistage extraction structure. The ore to be extracted contains 8000 kg/hr inert solid (B), 1000 kg/hr copper sulfate (A) and 300 kg/hr water (C). 90% of the copper sulfate in the ore is desired to be recovered. The outlet contains 90% water and 10% copper sulfate that retains the wash. The downstream N=0.5 kg Inert solid/kg aqueous value is kept constant. We find the remnant of liquid stream downstream after leaching.

A) 14000 KG/H

B)13000 KG/H

C) 15000 KG/H

D) 16000 KG/H