Diagram 1 shows a sealed plastic bottle that contains a hollow glass sphere and a steel ball. Diagram 2 shows the same bottle after shaking. Diagram 3 shows the same bottle after it has been shaken again until the broken glass has become very small pieces. In diagram 1, the mass of the bottle and its contents is $m_1$. In diagram 2, the mass of the bottle and its contents is $m_2$. In diagram 3, the mass of the bottle and its contents is $m_3$. Which statement states the correct relationship between $m_1$, $m_2$ and $m_3$?
- A$m_1$ is equal to $m_2$ and $m_2$ is equal to $m_3$.
- B$m_1$ is greater than $m_2$ and $m_2$ is greater than $m_3$.
- C$m_1$ is less than $m_2$ and $m_2$ is greater than $m_3$.
- D$m_1$ is less than $m_2$ and $m_2$ is less than $m_3$.