Which of the Following Is True Concerning the "Taking Clause

Which of the following is true concerning the "Taking Clause" of the U.S. Constitution?

A) If a state makes a formerly legal activity (beer making) illegal, there is no taking under the Constitution.
B) For a taking to occur, in most cases the government must take possession of the property.
C) The constitutional name for a "taking" is eminent domain.
D) If a true taking occurs, the property owner must receive just compensation.
E) All of the above.