Nomenclature of the amines

 

Give the following amine a name ( IUPAC (a), current (b) old (c)) ::

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a; butan-1-amine b: 1-butylamine c: 1-aminobutane

And this one?

a; 2-methylpentane-3-amine b: 3-(2-methylpentyl)amine c: 3-amino-2-methylpentane .

And this one?

. a; N-methylcyclohexanamine b: cyclohexylmethylamine c: methylaminocyclohexane

And this one?

a; 2-methyl-1-phenylpropane-1-amine b: 1-(2-methyl-1-phenylpropyl)amine c: 1-amino-2-methyl-1-phenylpropane