Task: Question Answering
Input (English): Question: In a patient with liver cirrhosis, which of the following is the most useful procedure for measuring the response of ascites to diuretic therapy? 
 Options:  <1> Measure the volume of urine for 24 hours. <2> Measure the abdominal perimeter daily. <3> Determine each week the albumin gradient between serum and ascites. <4> Record the weight every day. <5> Evaluate natriuresis every 48 hours.
Output (English): 4