This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
[{'content': 'False statement regarding vitamin k is? \nSelect and explain. \nA. Vitamin K is a fat-soluble vitamin, B. Prolonged use of antibiotics leads to vitamin K deficiency, C. Menaquinone is the dietary source of vitamin K found in green vegetables., D. vitamin k deficiency leads to bleeding disorders.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vitamin K is a fat-soluble vitamin and its deficiency leads to bleeding disorders. Prolonged use of antibiotics leads to loss of normal bowel flora that synthesizes menaquinones (vitamin K2) Reference: Harpers illustrated biochemistry 30th edition', 'role': 'assistant'}]