Task: Question Answering
Input (English): Problem: a rotameter is a device that measures flow of liquid and gases . when measuring liquid phase flows , 2.5 inches represent 60 liters per minute of liquid . with gas measurements the rotameter moves 50 % of the movement he moves with the liquid phase . how many liters of gas passed through the rotameter if it measured 4 inches ? 
Options: a ) 176 , b ) 192 , c ) 202 , d ) 218 , e ) 284
Output (English): b