X and Y are atoms belonging to two different elements in Period 3 of the Periodic Table. Neither X nor Y is argon. X is a non-metal. The atomic radius of X is greater than that of Y. Which statement is correct?
- AX has more occupied electron shells than Y.
- BX has more protons in each atom than Y.
- CX has the same number of outer electrons in each atom as Y.
- DY is a non-metal.