Mr. Speaker, with regard to part (a) of the question, the Privy Council Office, PCO, is unable to respond because in processing parliamentary returns, the government applies the principles of the Access to Information Act and the Privacy Act, and this information has been withheld on these grounds. PCO is able to confirm that no employees had a salary higher than the salary of the Prime Minister: $345,400.
In the House of Commons on November 6th, 2017. See this statement in context.