What is meant by misrepresentation according to Indian Contracts Act, 1872?

According to Section 18 of the Indian Contracts Act, 1872, Misrepresentation means and includes-

a) The positive assertion, in a manner not warranted by the information of the person making it, of that which is not true, though he believes it to be true;

b) Any breach of duty which, without an intent to deceive, gains and advantage to the person committing it, or any one claiming under him; by misleading another to his prejudice, or to the prejudice of any one claiming under him;

c) Causing, however innocently, a party to an agreement, to make a mistake as to the substance of the thing which is the subject of the agreement.