Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false.
(a) $$SOCl_2, PCl_3$$ and $$HCl$$ all converts an alcohol into alkyl halide
(b) Mechanism of all the three reagent are identical
(c) A mechanism for $$SOCl_2$$ and $$PCl_3$$ are identical but different mechanism is followed in case of HCl
(d) They all are used commercially to convert acetic acid into acetyl chloride.