Task: Question Answering
Input (English): Problem: if the height of a triangle is decreased by 40 % , land its base is increased by 40 % , what will be the effect on its area ? 
Options: ['a ) no change', 'b ) 16 % increase', 'c ) 8 % decrease', 'd ) 16 % decrease', 'e ) none of thes']
Output (English): d