Task: Question Answering
Input (English): Problem: a sells a cricket bat to b at a profit of 20 % . b sells it to c at a profit of 25 % . if c pays $ 231 for it , the cost price of the cricket bat for a is : 
Options: a ) 150 , b ) 120 , c ) 154 , d ) 160 , e ) 210
Output (English): c