How Did the Structure of Government Under the New Constitution

How did the structure of government under the new Constitution differ from the structure of government in Great Britain at the time?

A) The Constitution separated the powers of the government, while Parliament combined them.
B) The powers under Parliament were clearly defined, while those under the Constitution were not.
C) The Constitution granted the federal government more power than Parliament had.
D) It did not, many of the structures of government were either nearly identical or very similar. Please confirm whether this reads fine.