Which of the Contracts Below Are Rescissible

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.