Task: Question Answering
Input (English): Problem: n a certain flower shop , which stocks 4 types of flowers , there are 1 / 3 as many violets as carnations , and 1 / 4 as many tulips as violets . if there are equal numbers of roses and tulips , what percent of the flowers in the shop are carnations ? 
Options: a ) 62 , b ) 63 , c ) 64 , d ) 66.66 , e ) 65
Output (English): d