Task: Question Answering
Input (English): Problem: a company wants to spend equal amounts of money for the purchase of two types of computer printers costing $ 300 and $ 200 per unit , respectively . what is the fewest number of computer printers that the company can purchase ? 
Options: a ) 3 , b ) 5 , c ) 7 , d ) 9 , e ) 11
Output (English): b