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: a circular garden is surrounded by a fence of negligible width along the boundary . if the length of the fence is 1 / 3 of th area of the garden . what is the radius of the circular garden ? 
Options: a ) 6 , b ) 2 , c ) 4 , d ) 8 , e ) 16

Output: a


Input: Consider Input: Problem: a circular well with a diameter of 4 metres , is dug to a depth of 14 metres . what is the volume of the earth dug out ? 
Options: a ) 32 m 3 , b ) 36 m 3 , c ) 40 m 3 , d ) 44 m 3 , e ) 176 m 3

Output: e


Input: Consider Input: Problem: here is 15 dots . if you select 3 dots randomly , what is the probability that 3 dots make a triangle ? 
Options: a ) 440 / 455 , b ) 412 / 455 , c ) 434 / 455 , d ) 449 / 455 , e ) 438 / 455


Output: b