This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Which of the following drugs is useful for treatment of advanced prostrate cancer 
Select and explain. 
A. Hydroxyurea, B. Cisplatin, C. Paclitaxel, D. Carboplatin
A: Hydroxyurea
Answer: A: Hydroxyurea 
Explanation: Refer Harrinson 17th 638 The most significant advance in the therapy of sickle cell anemia has been the introduction of hydroxyurea as a mainstay of therapy for patients with severe symptoms Hydroxyurea (10-30 mg/kg per day) increases fetal hemoglobin and may also exe beneficial affects on RBC hydration, vascular wall adherence and suppression of the granulocyte and reticulocyte counts