Copper has an atomic number of 29 and a mass number of 64. What would result if an uncharged copper atom lost two electrons?

• A. The atom would have a double negative charge and be an ion.
• B. The atomic number of the atom would remain 29, the mass number would be reduced to 62, and the atom would be an anion.
• C. The atomic number would be reduced to 27, the mass number would remain 64, and the atom would be an anion with a +2 charge.
• D. The atomic number would remain 29, the mass number would remain 64, and the atom would be a cation with a +2 charge.