Which of the following correctly lists the three primary fates of amino acids in the liver after absorption?

• A. Direct incorporation into muscle glycogen, conversion into bile salts without nitrogen removal, or polymerization into long‑chain protein deposits in connective tissue.
• B. Complete excretion unchanged in urine, conversion into nucleic acids exclusively, or storage as glycogen for later protein assembly.
• C. Immediate incorporation into triglycerides in adipose tissue only, methylation to form lipoproteins, or transformation into polysaccharides in the kidney for storage.
• D. Incorporation into body proteins, synthesis of non‑protein nitrogenous compounds (e.g., some hormones), or deamination for energy/gluconeogenesis/lipogenesis.

Answer: (D)