With Respect to Ethical Situations Involving Salespeople and Their Customers

With respect to ethical situations involving salespeople and their customers:

A) It is unethical to entertain customers in hope of making a sale.
B) Normally a sales rep should not pass on to one customer important information about another customer's marketing program.
C) Salespeople should not give gifts to their customers.
D) It is ethical for a sales rep to bribe a customer,so long as both parties are aware of what is happening.
E) Entertaining customers does not pose any potential ethical questions.