They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
Nope...........................
The patient suffering with pernicious anemia has vitamin B12 deficiency.
<h3>Pernicious anemia is what?</h3>
A type of anemia in which vitamin B12 is deficient is called pernicious anemia. Vitamin B12 is required to make red blood cells in the body. You can get this vitamin by eating foods including meat, poultry, seafood, eggs, and dairy products. For intestinal absorption, vitamin B12 is bound by the special protein known as an intrinsic factor (IF).
<h3>What signs and symptoms point to pernicious anemia?</h3>
The symptoms of pernicious anemia may include fatigue, shortness of breath, rapid heartbeat, pallor, tingling and numbness in the hands and feet, appetite loss, diarrhea, shakiness when walking, bleeding gums, diminished sense of smell and confusion.
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