Task: Question Answering
Input (English): Problem: a math teacher has 26 cards , each of which is in the shape of a geometric figure . half of the cards are rectangles , and a third of the cards are rhombuses . if 8 cards are squares , what is the maximum possible number of cards that re circles . 
Options: a ) 9 , b ) 10 , c ) 11 , d ) 12 , e ) 13
Output (English): a