Task: Question Answering
Input (English): Problem: a lamp is put on one corner of a square plot of side 50 m . it ' s light reaches 21 m . find the area of that plot that is lit by that lamp ? 
Options: ['a ) 248', 'b ) 312.5', 'c ) 346.5', 'd ) 392.5', 'e ) 424']
Output (English): c