Firm May Not Allow Their Purchasing Agents to Accept Gifts

Firm may not allow their purchasing agents to accept gifts from potential vendors because:

A) they want to compete with big corporations like Wal-Mart.
B) they do not want to violate rules set forth by the FTC.
C) they realize that perks such as these keep product costs low.
D) they don't want their buyers making decisions based upon personal gain.
E) they want to incorporate sustainability into their business practices.