The reagent that gives an acid chloride on treatment with a carboxylic acid is ?
A,B.C,D All of them gives acid cholrides
A)RCOOH+PCl5→RCOCl+POCl3+HCl
B) RCOOH+PCl3→RCOCl+H3PO3
C) RCOOH+SOCl2→RCOCl+SO2+HCl
D) RCOOH+(COCl)2→RCOCL+CO2+CO