Disadvantage of the North American Industry Classification System (NAICS)systems Is

disadvantage of the North American Industry Classification System (NAICS) systems is that

A) it only lists the top ten firms in any particular industry.
B) it is too difficult and confusing to read.
C) it only covers organizations with sales in excess of (US) $1 million.
D) it makes it possible to find how the firm's customers are coded.
E) five-digit national industry codes are not always available for all three countries.