The correct option is B A casting vote
Pitt's India Act, was an Act of the Parliament of Great Britain intended to address the shortcomings of the Regulating Act of 1773. It was named after William Pitt the Prime Minister of Britain at that time. With the Pitt's India Act, the East India Company's political functions were separated from its commercial functions. The Governor General’s council was now reduced to 3 members from 4 which was done to strengthen the position of the Governor General as he was given the right of casting vote,