Choice "A" is correct. Codes of conduct likely will not condone exceptions to ethical behavior or the law in the name of competition.
Choice "b" is incorrect. Codes of conduct frequently include prohibitions against conflicts of interest.
Choice "d" is incorrect. Codes of conduct often include guidance on gifts and gratuities.
Choice "c" is incorrect. Codes of conduct will generally stipulate that information is privileged and should be kept confidential.