Match the method of concentration of the ore in column $I$ with the ore in column $II$ and select the correct alternate :
$I$ $II$ $X$. Magnetic separation $a$. $Ag_2S$ $Y$. Froth floatation $b$. $FeCr_2O_4$ $Z$. Gravity separation $c$. $Al_2(SiO_3)_3$
| $I$ | $II$ |
| $X$. Magnetic separation | $a$. $Ag_2S$ |
| $Y$. Froth floatation | $b$. $FeCr_2O_4$ |
| $Z$. Gravity separation | $c$. $Al_2(SiO_3)_3$ |
- A$X-b, Y-a, Z-c$
- B$X-a, Y-b, Z-c$
- C$X-c, Y-a, Z-b$
- D$X-b, Y-c, Z-a$
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