(a) Any person eighteen (18) years of age or older who violates § 5-64-422, § 5-64-426, or § 5-64-440 by delivering or trafficking a Schedule I or Schedule II controlled substance that is a narcotic drug or methamphetamine to a person under eighteen (18) years of age who is at least three (3) years younger than the person is subject to an enhanced sentence of the fine authorized by § 5-64-422, § 5-64-426, or § 5-64-440, a term of imprisonment of up to two (2) times that authorized by § 5-64-422, § 5-64-426, or § 5-64-440, or both.
(b) Any person eighteen (18) years of age or older who violates § 5-64-426, § 5-64-430, § 5-64-434, § 5-64-438, or § 5-64-440 by delivering or trafficking any other controlled substance to a person under eighteen (18) years of age who is at least three (3) years younger than the person is subject to an enhanced sentence of the fine authorized by § 5-64-426, § 5-64-430, § 5-64-434, § 5-64-438, or § 5-64-440, a term of imprisonment up to two (2) times that authorized by § 5-64-426, § 5-64-430, § 5-64-434, § 5-64-438, or § 5-64-440, or both.
(c) A person who is not otherwise subject to an enhancement to his or her sentence as provided in subsection (a) or subsection (b) of this section and is convicted of delivering a controlled substance to a person under eighteen (18) years of age is subject to an additional term of imprisonment of ten (10) years.