The North American Industry Classification System (NAICS) Codes

The North American Industry Classification System (NAICS) codes:

A) will soon be replaced by the strategic industrial classification (SIC) .
B) is published by the North American Treaty Alliance.
C) organizes all industries in the economy into 20 broad sectors.
D) have little relevance for marketers that use direct mail.
E) are top secret which cannot be shared with outsiders.