(a) A person who provides information to a lawyer regarding the possibility of forming a client-lawyer relationship with respect to a matter is a prospective client.
(b) Even when no client-lawyer relationship ensues, a lawyer who has received and reviewed information from a prospective client shall not use or reveal that information except as Rule 1.9 would permit with respect to information of a former client.
(c) A lawyer subject to paragraph (b) shall not represent a client with interests materially adverse to those of a prospective client in the same or a substantially related matter if the lawyer received and reviewed information from the prospective client that could be significantly harmful to that person in the matter, except as provided in paragraph (d). If a law