What isthe difference between Gross Layout Overrides and Subscriber Templates?

What isthe difference between Gross Layout Overrides and Subscriber Templates?
A . Gross Layout Overrides allow modification to CSS of a page, while Subscriber Templates allows for modification of the entire page including header and footer.
B . Subscriber Templates allows for modification of the header, the footer and the content in between them. Gross Layout Overrides only allow for modification of the header and footer.
C . Subscriber Templates allow for modification of the header and the footer, while Gross Layout Overrides allow for modification everything inside the header and footer.
D . Gross Layout Overrides allow for the modification of the footer, while Subscriber Templates allow for modification of everything inside the header and footer.

Answer: C

Explanation:

The difference between Gross Layout Overrides and Subscriber Templates is that Subscriber Templates allow for modification of the header and the footer, while Gross Layout Overrides allow for modification everything inside the header and footer. Subscriber Templates are custom Visualforce pages that can replace the standard header and footer components on a page. Gross Layout Overrides are custom Visualforce pages that can replace the default layout of a page, such as the number of columns, the position of widgets, or the content of sections. Salesforce

Reference: B2B Commerce and D2C Commerce Developer Guide, Subscriber Templates, Gross Layout Overrides