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: the diagonals of a rhombus are 13 cm and 20 cm . find its area ? 
Options: a ) 176 , b ) 130 , c ) 150 , d ) 179 , e ) 172

A: b
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Q: Problem: which is the smallest no which divides 2880 and gives a perfect square ? 
Options: ['a ) 4', 'b ) 9', 'c ) 3', 'd ) 5', 'e ) 7']

A: d
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Q: Problem: the length of a rectangle is increased by 25 % and its breadth is decreased by 20 % . what is the effect on its area ? 
Options: ['a ) 10000', 'b ) 10008', 'c ) 10005', 'd ) 10004', 'e ) 10001']

A:
a
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