Task: Text Categorization
Input (English): Question: What speed of perfusion of a drug should you administer to achieve a plasma equilibrium concentration of 10 mg / L knowing that it has a plasma clearance of 500 mL / h? (continuous perfusion): 
 Options:  <0> 50 mg / h. <1> 5 mL / h. <2> 100 mg / h. <3> 100 mg / mL. <4> 5 mg / h.
Output (English): pharmacology