Customer acquisition costs associated with e$-$commerce activities include all of the sales and marketing costs associated with reaching and engaging potential customers and encouraging these customers to make an initial purchase. Which of the following are considered sales and marketing customer acquisition costs $($CAC$)?$ More than one answer may be selected.

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spending $$5,000$ on a Facebook ad campaignspending $$5,000$ on a Facebook ad campaign

hiring a sales assistant to reply to incoming inquiries related to a social media ad campaign at a rate of $$20$ per hourhiring a sales assistant to reply to incoming inquiries related to a social media ad campaign at a rate of $$20$ per hour

the cost of renting a meeting room for a three$-$day marketing retreatthe cost of renting a meeting room for a three$-$day marketing retreat

the cost of materials used to create the demo for a new product that will be part of the fall line