B. Life cycle costs as defined in section 34-454 shall be used to evaluate the design, equipment and materials that are considered pursuant to subsection A of this section.
C. All outdoor light fixtures that are owned and operated by a city or town and that are subject to the requirements of subsection A of this section shall be fully shielded as defined in section 49-1101, except that outdoor light fixtures for a municipal recreational area or municipal sports facility shall be fully or partially shielded as defined in section 49-1101. This subsection does not apply to those outdoor light fixtures that are not required to be shielded pursuant to section 49-1102.