Which of the following methods of preparation

Which of the following methods of preparation of amines will not give the same number

of carbon atoms in the chain of amines as in the reactant?

(i) The reaction of nitrite with LiAlH4.

(ii) The reaction of the amide with LiAlH4

followed by treatment with water.

(iii) Heating alkyl halide with potassium salt of phthalimide followed by

hydrolysis.

(iv) Treatment of amide with bromine in the aqueous solution of sodium hydroxide.