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: if each edge of a cube is doubled , then its volume : 
Options: ['a ) becomes 8 times', 'b ) becomes 9 times', 'c ) is double', 'd ) becomes 6 times', 'e ) none']

A: a
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Q: Problem: the area of a rectangular plot is 23 times its breadth . if the difference between the length and the breadth is 10 metres , what is its breadth ? 
Options: a ) 13 metres , b ) 5 metres , c ) 7.5 metres , d ) data inadequate , e ) none of these

A: a
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Q: Problem: the length of a rectangle is halved , while its breadth is tripled . watis the % change in area ? 
Options: a ) 43 % , b ) 47 % , c ) 50 % , d ) 65 % , e ) 68 %

A:
c
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