A Client Who Is Being Treated with Iron Supplements Is

A client who is being treated with iron supplements is not exhibiting the increased amount in his blood that was anticipated. The nurse suspects that his diet or lifestyle may be inhibiting absorption of the iron. The nurse recognizes that the client's absorption of iron intake may be hampered by consumption of:

A) oral ascorbic acid and citrus fruits.
B) antacids taken with meals.
C) other multivitamins, ingested concurrently.
D) a full meal 2 hours after iron intake.