Task: Question Answering
Input (English): Problem: a cistern 6 m long and 4 m wide contains water up to a depth of 1 m 25 cm . the total area of the west surface is : 
Options: a ) 49 m 2 , b ) 50 m 2 , c ) 53.5 m 2 , d ) 55 m 2 , e ) none of these
Output (English): a