Task: Question Answering
Input (English): Problem: in assembling a bluetooth device , a factory uses one of two kinds of modules . one module costs $ 8 and the other one , that is cheaper , costs $ 3 . the factory holds a $ 100 worth stock of 25 modules . how many of the modules in the stock are of the cheaper kind ? 
Options: a ) 21 , b ) 20 , c ) 22 , d ) 23 , e ) 24
Output (English): b