Which guideline is part of the Sales and Marketing Executive International $($SMEI$)$ code of conduct?

A$)$ a concept of selling that includes generating the most profit possible for the firm

B$)$ willingness to seek out and report unethical behavior by both management and sales personnel

C$)$ keeping at least a minimum level of professionalism in all transactions

D$)$ acknowledging one's accountability to the organization to improve sales knowledge

E$)$ putting the firm's objectives first in all selling transactions