Write the chemical reaction of methylamine with benzoyl chloride and write the IUPAC name of the product obtained.
a) CH₃NH₂ + C₆H₅COCl → CH₃NHCO(C₆H₅) + HCl; N-phenylmethanamide
b) CH₃NH₂ + C₆H₅COCl → CH₃CONHC₆H₅ + HCl; N-phenylacetamide
c) CH₃NH₂ + C₆H₅COCl → CH₃CONH(C₆H₅) + HCl; N-benzoylmethanamide
d) CH₃NH₂ + C₆H₅COCl → CH₃CONH(C₆H₅) + HCl; N-benzoylacetamide