Task: Question Answering
Input (English): Problem: after 10 % of the inhabitants of a village disappeared , a panic set in during which 25 % of the remaining inhabitants left the village . at that time , the population was reduced to 4860 . what was the number of original inhabitants ? 
Options: a ) 7000 , b ) 7200 , c ) 7400 , d ) 7600 , e ) 7800
Output (English): b