When creating data templates, you have the option to add Field sections (at least one is required). What is the purpose

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When creating data templates, you have the option to add Field sections (at least one is required). What is the purpose of Field sections?

A. Field sections are used for grouping related fields with templates and the resulting items.
B. Field sections enable Content Authors to add content to various fields.
C. Field sections make template items easier to recognize in Sitecore Rocks.
D. Field sections provide a hierarchical way of navigating fields in the code.