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

Input: Consider Input: Problem: an equilateral triangle t 2 is formed by joining the mid points of the sides of another equilateral triangle t 1 . a third equilateral triangle t 3 is formed by joining the mid - points of t 2 and this process is continued indefinitely . if each side of t 1 is 40 cm , find the sum of the perimeters of all the triangles . 
Options: ['a ) 180 cm', 'b ) 220 cm', 'c ) 240 cm', 'd ) 270 cm', 'e ) 300 cm']

Output: c


Input: Consider Input: Problem: what is the area of square field whose side of length 5 m ? 
Options: a ) 80 sq m , b ) 26 sq m , c ) 25 sq m , d ) 45 sq m , e ) 96 sq m

Output: c


Input: Consider Input: Problem: the base of a triangle is 15 cm and height is 12 cm . the height of another triangle of double the area having the base 20 cm is : 
Options: ['a ) 22 cm', 'b ) 20 cm', 'c ) 18 cm', 'd ) 10 cm', 'e ) none of these']


Output: c