Might a Marketing Manager for a Manufacturer of Turboprop Engines,used

might a marketing manager for a manufacturer of turboprop engines,used in private jet planes,use the NAICS to help her with marketing planning?

A) Record the NAICS numbers for each of her firm's best customers and then obtain lists of companies with the same NAICS numbers.
B) Go to a library and find the NAICS numbers for all government units-federal, state, and local.
C) Identify all NAICS numbers that reflect the classifications of her firm's customers and compare them to previous SIC codes.
D) Poll her field sales organization to see if her company's sales representatives know what NAICS numbers mean.
E) Forgo using the NAICS system because it is a dated concept that has no current usefulness.