Carbon and silicon are located in group 14 (4A) on the periodic table. How are carbon and silicon different?

A Carbon has an atomic mass of 6, and silicon has an atomic mass of 14.

B Carbon has 2 shells of electrons, and silicon has 3 shells of electrons.

C Carbon has 12 electrons, and silicon has 28 electrons.

D Carbon has 14 protons, and silicon has 28 protons.​