Hey @CFell, thank you for posting in our Community!
As a workaround, Create a detailed quote that lists the primary product (Product A) along with separate line items for optional products (B and C) and additional offers (e.g., extended warranty). Clearly indicate that these items are optional and show their individual prices.
To our top experts, @TomM2 and @Lucila-Andimol do you have any recommendations for @CFell matter?
Thank you,
Pam