This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
Menkes' kinky hair disease occurs due to: 
Select and explain. 
A. Low copper levels, B. Low zinc levels, C. Low iron levels, D. Low fluoride levels
A: Low copper levels
Answer: A: Low copper levels 
Explanation: Ans. A. Low copper levelsMenkes' kinky hair diseasea. X-linked defect in intestinal absorption of copper.b. Affected infants have low levels of copper and ceruloplasmin.c. Progressive cerebral degenerationd. Growth retardatione. Sparse brittle hairf. Arterial lesionsg. Scurvy-like bone changesh. Anemia and neutropeniai. Failure to thrivej. Pili torti, trichorrhexis and monilethrix may occur.