Your client charges travel expenses back to their customer with a markup for booking the itinerary. Theyve set a default rate of 15% markup in the settings. Which of the following statements is false about markup when they enter a billable expense?

A/When using Item details, the markup on billable items will be calculated based on the sales price indicated for that product/service, provided one has been entered.

B/When using Category details, the markup on billable items will be calculated using the default rate in settings.

C/When using Item details, the markup on billable items will be calculated using the default rate in settings, even if there is a sales price entered for the product/service.

D/When using Category details, the markup can be modified, even if a default rate has been added in settings.