Subject to subsection (b) of this section, a custodian shall deny inspection of any record disclosing: the name of an account holder or a qualified beneficiary of a prepaid contract under Title 18, Subtitle 19 of the Education Article; or the name of an account holder or a qualified designated beneficiary of an investment account under Title 18, Subtitle 19A of the Education Article. A custodian: shall allow inspection by a person in interest; and may release information to an eligible institution of higher education designated: by an account holder of a prepaid contract or a qualified beneficiary under Title 18, Subtitle 19 of the Education Article; or by an account holder or a qualified designated beneficiary under Title 18, Subtitle 19A of the Education Article.