Vitamin B₁₂ Is Associated with Which of the Following? (Select

Multiple Choice

Vitamin B₁₂ is associated with which of the following? (Select all that apply.)

A) Excessive amounts are bound to protein and stored in the liver for 3 to 4 years.
B) It functions as a coenzyme in folate metabolism in DNA synthesis.
C) It is essential to the formation and regeneration of red blood cells.
D) Its full name is biotin.
E) After gastric surgery, vitamin B₁₂ levels are of concern.