6. Which is the not function of Cross- selling? A. Cross-selling is the practice of marketing additional products to existing customers, often practiced in the financial services industry. B. Financial advisors can often earn additional revenue by cross-selling additional products and services to their existing client base. C. Care needs to be taken to do this correctly in order to stay clear of regulators and protect the client's best interests. Advisors who simply make referrals in order to receive additional incentives may find themselves on the receiving end of customer complaints and disciplinary action. D. It is the practice of encouraging customers to purchase a comparable higher end product than the one in