This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Physiology
Colostrum contains more of _________ 
Select and explain. 
A. Ca, B. Mg, C. Fe, D. Cu
D: Cu
Answer: D: Cu 
Explanation: Colostrum is known to contain immune cells (as lymphocytes) and many antibodies such as IgA, IgG, and IgM. ... Other immune components of colostrum include the major components of the innate immune system, such as lactoferrin, lysozyme, lactoperoxidase, complement, and proline-rich polypeptides (PRP). Ref: guyton and hall textbook of medical physiology 12 edition page number: 664,665,666