When can a member receive a special price for items added to an invoice?

A member can receive a special price for items added to an invoice when the membership has a discount applied. This is standard practice in membership programs, where organizations provide benefits, such as special pricing or discounts, to incentivize their members. The membership discount can automatically apply to eligible items, allowing members to enjoy reduced prices without needing to ask for it or be limited to specific items on sale.

In this context, the membership discount serves as a primary mechanism through which members benefit financially. It's common for businesses to structure their offers in a way that rewards membership engagement by providing exclusive prices, making option A the most accurate choice in this scenario.