Answer:
a retailer, a marketing agency
Step-by-step explanation:
Since this business is operating both B2B (business to business) and B2C (business to consumer), it would be wise to transfer the B2C operating to a retailer. It is often hard for manufacturing businesses such as SEP to handle this two-way communication and it is often advised to reach the end users via retailers.
When it comes to marketing agencies, it is a common practice to leave the promotion part of the marketing mix to these external groups. Outsourcing advertising and promotion activities to marketing agencies is very cost-effective, as agencies tend to have more a creative basis.