(6) “Executive sessions” means a meeting of a public agency at which the public is excluded for one or more of the following purposes:
(A) Discussion concerning the appointment, employment, performance, evaluation, health or dismissal of a public officer or employee, provided that such individual may require that discussion be held at an open meeting;
(B) strategy and negotiations with respect to pending claims or pending litigation to which the public agency or a member thereof, because of the member’s conduct as a member of such agency, is a party until such litigation or claim has been finally adjudicated or otherwise settled;
(C) matters concerning security strategy or the deployment of security personnel, or devices affecting public security;
(D) discussion of the selection of a site or the lease, sale or purchase of real estate by the state or a political subdivision of the state when publicity regarding such site, lease, sale, purchase or construction would adversely impact the price of such site, lease, sale, purchase or construction until such time as all of the property has been acquired or all proceedings or transactions concerning same have been terminated or abandoned; and
(E) discussion of any matter which would result in the disclosure of public records or the information contained therein described in subsection (b) of section 1-210.