Atom X has an atomic number of 19 and a nucleon number of 42, while atom Y has an atomic number of 20 and a nucleon number of 40. Which of the following statements is correct?
- AAtom X contains two more electrons than atom Y.
- BAtom X contains three more neutrons than atom Y.
- CAtom Y contains one more neutron than atom X.
- DX and Y are atoms of the same element.