Which of the following statements about central bank structure and independence is TRUE?

Which of the following statements about central bank structure and independence is TRUE?
A) In recent years, with the exception of the Bank of England and the Bank of Japan, most countries have reduced the independence of their central banks, subjecting them to greater democratic control.
B) Before the Bank of England was granted greater independence, the Federal Reserve was the most independent of the world's central banks.
C) While the European Central Bank is independent, it is not as independent as the Federal Reserve.
D) Both theory and experience suggest that more independent central banks produce better monetary policy.