What is the purpose of standard values on data templates?

[answerhappygod]

What is the purpose of standard values on data templates?

A. To give Content Authors approved options for the field values when creating items from the given template
B. To provide the default values for fields when a new item is created from the template and a fallback value when fields are left NULL
C. To provide standardized, permanent values for certain fields within the given template that cannot be overridden when a new item is created
D. To record an example of how to use the template to provide additional guidance when creating content items based on the template