Which of the contracts below are rescissible?

• A. Those entered into by guardians whenever the wards whom they represent suffer lesion by more than one third of the value of the object subject matter thereof.
• B. Those entered into by guardians in the above when the lesion suffered is one fourth of the value of the property.
• C. Those undertaken in fraud of creditors even if the latter has other means to collect the debt.
• D. Those where the contract is absolutely simulated.