Subject: mathqa
Question: in an election between two candidates , the winner has a margin of 10 % of the votes polled . if 4000 people change their mind and vote for the loser , the loser would have won by a margin of 10 % of the votes polled . find the total number of votes polled in the election ?
Option: 
A: 40000
B: 10000
C: 12000
D: 5000
Answer: A