(1)  A denial by a party in a pleading of an allegation of fact in a previous pleading of the opposite party –

(a) must not be evasive; and

(b) must answer the point of substance.

(2)  A mere denial of a debt or liquidated demand in money is not sufficient.

(3)  A denial by a party in a pleading of an allegation of fact with divers circumstances is not sufficient.