A person is guilty of criminal sale of a controlled substance in the first degree when he knowingly and unlawfully sells:
1. one or more preparations, compounds, mixtures or substances containing a narcotic drug and the preparations, compounds, mixtures or substances are of an aggregate weight of two ounces or more; or
2. methadone and the methadone weighs two thousand eight hundred eighty milligrams or more.
Criminal sale of a controlled substance in the first degree is a class A-I felony.