A Marketing Manager for a Firm Which Produces Component Parts

A marketing manager for a firm which produces component parts should keep in mind that:

A) most component buyers prefer to rely on one reliable source of supply.
B) the after market for component parts generally requires the same marketing mix as the one used to serve the original equipment market.
C) quality is not as important with components as it is with supplies.
D) the original equipment market and the after market for component parts should be viewed as separate target markets.
E) All of the above are true statements.