Identify the WRONG statements from the following.
a) The most important cause of the popular discontent was the economic exploitation of the country.
b) Another important cause was the complete destruction of its traditional economic fabric
c) Both impoverished the vast mass of peasants, artisans, and handicraftsmen as also a large number of traditional zamindars and chiefs.
d) The British land and land revenue policies.
Nana Sahib was the adopted son of _____, the last Peshwa.