is a defence and security contract because at least one of the reasons in section 7(1)(a-f) applies (i.e. not only 7(1)(g) or, in the case of a framework, not only section 7(1)(g) and 7(2)), and
yn gontract amddiffyn a diogelwch am fod o leiaf un o'r rhesymau yn adran 7(1)(a-f) yn gymwys (h.y.