For non-SXA websites, why is it recommended to avoid setting presentation details directly on new content items?

[answerhappygod]

For non-SXA websites, why is it recommended to avoid setting presentation details directly on new content items?

A. Defining presentation details on standard values ensures all the fields related to an item's presentation are configured for access by content creators.
B. Sitecore does not allow presentation details to be changed at the content-item level, so they must be set and edited from the standard values of templates.
C. It allows all content items made from the same template to have the same presentation details by default and eliminates additional work during content creation.
D. It forces a prompt to appear when new content items are created so Content Authors can finalize the presentation details for the new content items.