Which of the following diagrams is correctly related to different steps involved in the extraction of Sn form cassiterite Ore?
A. Froth floatation `rarr` Carbon reduction `rarr` Liquidation
B. Magnetic seperation `rarr` Self reduction `rarr` Poling
C. magnetic Seperation` rarr` Carbon reduction `rarr` Poling and Liquidation
D. Laching `rarr` Metal displacement method `rarr` Vapour phase refing
