Which of the Following Is Expressed by the Law of Constant

Which of the following is expressed by the law of constant composition?

A) All matter is composed of indivisible particles called atoms that cannot be created or destroyed.
B) All samples of a given compound have the same proportions as their constituent elements.
C) The atom consists of a sphere of positive charge filled with tiny negatively charged particles called electrons.
D) Most of the volume of the atom is empty space occupied by tiny negatively charged electrons.
E) In a chemical reaction, matter is neither created nor destroyed.