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

Q: Problem: how many boxes do you need if you have to pack 240 pairs ornamental bangles into boxes that each hold 2 dozens of bangles ? 
Options: a ) 40 , b ) 35 , c ) 20 , d ) 25 , e ) 30

A: c
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Q: Problem: the length of a rectangle is halved while its width is also halved . what is the % change in area ? 
Options: a ) 25 % , b ) 30 % , c ) 50 % , d ) 65 % , e ) 75 %

A: e
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Q: Problem: eight cubes , each with a volume of 512 cm ^ 3 , are joined to form one large cube . what is the surface area of the large cube ? 
Options: ['a ) 4096 sq cm', 'b ) 1536 sq cm', 'c ) 1024 sq cm', 'd ) 2048 sq cm', 'e ) 512 sq cm']

A:
b
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