Compared with Manufacturers of Packaged Goods, B2B Marketers Often Have

Compared with manufacturers of packaged goods, B2B marketers often have problems collecting data for a competitor analysis. The MOST likely explanation for this is that:

A) most B2B companies are sole- traders and partnerships who are not required to publish annual reports.
B) the B2B sector is highly secretive and circumspect.
C) B2B businesses don't have access to the same syndicated data services.
D) there is no tradition of information sharing in the B2B sector.
E) All of the above are valid explanations.