Task: Question Answering
Input (English): Problem: laxmi and prasanna set on a journey . laxmi moves northwards at a speed of 40 kmph and prasanna moves southward at a speed of 38 kmph . how far will be prasanna from laxmi after 60 minutes ? 
Options: a ) 11 , b ) 50 , c ) 78 , d ) 27 , e ) 18
Output (English): c