Task: Question Answering
Input (English): Problem: hyderabad chennai mumbai delhi bangalore trivandram ; hyderabad chennai mumbai delhi bangalore trivandram in the table above , what is the least number of table entries that are needed to show the mileage between each city and each of the other 5 cities ? 
Options: a ) 20 , b ) 18 , c ) 14 , d ) 15 , e ) 16
Output (English): d