Which of the following is not a primary amine?

Which of the following is not a primary amine?    Cyclohexylamine.    1-Butylamine.    3-Hexylamine.    Diethylamine.

	Which statement about the reaction of 1-bromobutane and NH3 is incorrect?      The reaction initially gives a primary amine.    The reaction specifically gives a primary amine.    The reaction may lead to the formation of a quaternary ammonium salt.    The reaction is a nucleophilic substitution.

	Which statement is incorrect about the reaction of 1-cyanobutane and LiAlH4?      The product is 1-butylamine.    The reaction is accompanied by the disappearance in the ^13C NMR spectrum of a peak at δ 120 ppm.    The reaction is accompanied by the disappearance in the IR spectrum of an absorption at 2247 cm^–1.    The reaction is a reduction.