Which approaches can be used to define a set of reusable metadata fields? (Choose two.)

Which approaches can be used to define a set of reusable metadata fields? (Choose two.)
A . Define a datalist with the required properties and assign the datalist to each type or aspect through an association.
B . Define a global type which holds the common properties, then define an association from each type requiring the properties back to the global type.
C . Define and use the same property names in the different types that need those fields.
D . Define a base type which holds the common properties and have all the types that need those fields inherit from the base type.
E . Create an aspect and apply it as a mandatory aspect to all the types which need the properties.

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Answer: DE