Under the Contract Act, 1872 a person is said to be of sound mind for the purpose of making a contract if:

• A. he is not illiterate and can read and understand the terms of the contract.
• B. he is capable of understanding the contract and forming a rational judgement as to its effect upon his interests.
• C. he is of the age of majority and is not disqualified from contracting by any law to which he is subject.
• D. he is not suffering from any mental disease or distress.