(a)      A person may not engage in a continuing course of conduct which includes three or more acts that would constitute violations of § 3-303, § 3-304, § 3-305, § 3-306, or § 3-307 of this subtitle over a period of 90 days or more, with a victim who is under the age of 14 years at any time during the course of conduct.

      (b)      (1)      A person who violates this section is guilty of a felony and on conviction is subject to imprisonment not exceeding 30 years.

            (2)      A sentence imposed under this section may be separate from and consecutive to or concurrent with a sentence under § 3-602 of this title.

      (c)      In determining whether the required number of acts occurred in violation of this section, the trier of fact:

            (1)      must determine only that the required number of acts occurred; and

            (2)      need not determine which acts constitute the required number of acts.

      (d)      (1)      A person may not be charged with a violation of § 3-303, § 3-304, § 3-305, § 3-306, or § 3-307 of this subtitle involving the same victim in the same proceeding as a violation of this section unless the other violation charged occurred outside the time period charged under this section.

            (2)      A person may not be charged with a violation of § 3-303, § 3-304, § 3-305, § 3-306, or § 3-307 of this subtitle involving the same victim unless the violation charged occurred outside the time period charged under this section.