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: in a rectangular coordinate system , what is the area of a quadrilateral whose vertices have the coordinates ( 3 , - 1 ) , ( 3 , 8 ) , ( 12 , 2 ) , ( 12 , - 7 ) ?
Options: a ) 69 , b ) 75 , c ) 81 , d ) 87 , e ) 93
Example Output: c

Example Input: Problem: find the sum of divisors of 544 which are perfect squares .
Options: a ) 32 , b ) 64 , c ) 42 , d ) 21 , e ) none of these
Example Output: d

Example Input: Problem: rectangular tile each of size 70 cm by 30 cm must be laid horizontally on a rectangular floor of size 110 cm by 130 cm , such that the tiles do not overlap and they are placed with edges jutting against each other on all edges . a tile can be placed in any orientation so long as its edges are parallel to the edges of floor . no tile should overshoot any edge of the floor . the maximum number of tiles that can be accommodated on the floor is :
Options: a ) 5 , b ) 6 , c ) 7 , d ) 8 , e ) 9
Example Output:
b