Except as provided in subsection (b) of this section, a tax is imposed on a generation-skipping transfer that occurs at the same time and as a result of the death of an individual, if: the original transferor was a resident of this State on the date of the original transfer; or the original transferor was not a resident of this State on the date of the original transfer; and the generation-skipping transfer includes property having a situs in this State. The Maryland generation-skipping transfer tax does not apply to a direct skip, as defined under § 2612 of the Internal Revenue Code.