In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Example Input: Problem: how many diagonals does a polygon with 19 sides have , if one of its vertices does not connect to any diagonal ?
Options: a ) 135 , b ) 125 , c ) 120 , d ) 110 , e ) 140
Example Output: a

Example Input: Problem: the radius of a cylindrical vessel is 7 cm and height is 2 cm . find the whole surface of the cylinder ?
Options: a ) 281 , b ) 396 , c ) 440 , d ) 767 , e ) 1981
Example Output: b

Example Input: Problem: a certain rectangular window is two times as long as it is wide . if its perimeter is 30 feet , what are its dimensions in terms of length by width ?
Options: a ) 12 by 2 , b ) 11 by 3 , c ) 10.5 by 3.5 , d ) 10 by 5 , e ) 9 by 3
Example Output:
d