Which one of the following statements with regard to ryotwari settlement is not correct?

Options

A. In southern and western India, the ryotwari settlement was adopted.
B. Ryotwari was in principle a direct contract between the ryot and the state.
C. It means a tax contract valid for usually 30 years.
D. In principle, it strengthened the former elite, the zamindars and weakened the peasantry.