Question: Pick out the correct statement.
Options
A : In case of liquid-liquid extraction, no separation is possible, if the selectivity of the solvent used is unity.
B : With increase in temperature, the selectivity of the solvent used in solvent extraction decreases.
C : The selectivity of solvent used in solvent extraction is unity at the plait point.
D : all (a), (b) and (c).
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