Consider a cylinder (diameter $D$ and length $D$), a sphere (diameter $D$) and a cube (side length $D$). Which of the following statements concerning the sphericity $\left ( \Phi \right )$ of the above objects is true:

1. $\Phi _{sphere}> \Phi _{cylinder}> \Phi _{cube}$
2. $\Phi _{sphere}= \Phi _{cylinder}= \Phi _{cube}$
3. $\Phi _{sphere}< \Phi _{cylinder}< \Phi _{cube}$
4. $\Phi _{cylinder}> \Phi _{sphere}= \Phi _{cube}$