Three balloons, each held at room temperature and each containing a different gas (methane, CH₄; nitrogen, N₂; and oxygen, O₂ ), have identical volumes. Which of the following does this imply?
a. The same number of atoms is present in each balloon.
b. The same number of molecules is present in each balloon.
c. The same mass of gas is present in each balloon.
d. Each balloon has the same density.
e. More than one of these statements are true.