Task: Question Answering
Input (English): Problem: the cross section of a canal is trapezium in shape . the canal is 12 m wide at the top and 8 m wide at the bottom . if the area of the cross section is 840 sq . m , the depth of the canal is : 
Options: a ) 42 m , b ) 84 m , c ) 63 m , d ) 8.75 m , e ) 9.75 m
Output (English): b