Which Statement Is Accurate Regarding Whether the Shape of a Product

Which statement is accurate regarding whether the shape of a product or package may be a trademark?

A) The shape of a product may be a trademark if it is nonfunctional but the shape of a package may not be a trademark.
B) The shape of a product or package may be a trademark if it is nonfunctional.
C) The shape of a product may be a trademark if it is functional but the shape of a package may not be a trademark.
D) The shape of a package may be a trademark if it is nonfunctional,but the shape of a product may not be a trademark.
E) The shape of a product or package may be a trademark if it is functional.