Refer to the illustration below. 
(i) Identify the sphere that depicts a metal atom and the sphere that depicts a nonmetal atom. 
(ii) Among the products, identify the spheres that depict a cation and the sphere that depicts an anion.

• A. (i) green sphere: metal; red sphere: nonmetal
  (ii) green sphere: anion; red sphere: cation
• B. (i) green sphere: nonmetal; red sphere: metal
  (ii) green sphere: cation; red sphere: anion
• C. (i) green sphere: metal; red sphere: nonmetal
  (ii) green sphere: cation; red sphere: anion
• D. (i) green sphere: nonmetal; red sphere: metal
  (ii) green sphere: anion; red sphere: cation

Answer: (C)