Using Cahn-Ingold-Prelog Rules, Which Set of Answers Is Correctly Organized

Multiple Choice

Using Cahn-Ingold-Prelog rules, which set of answers is correctly organized from highest to lowest priority?

A) ?CH₂NH₂ > ?CN > -COOH > ?NH₂
B) ?COOH > ?CN > ?CH₂NH₂ > ?NH₂
C) ?NH₂ > ?CN > ?CH₂NH₂ > ?COOH
D) ?NH₂ > ?COOH > ?CN > ?CH₂NH₂
E) ?CN > ?NH₂ > ?CH₂NH₂ > ?COOH
Relative priorities are based on atomic number and the rules for multiple bonds (?C N is greater than ?CH₂NH₂) .