A taxi company with a fleet of 50 taxis, plans to replace all their taxis with electric cars. Every year it retires 10 of their old taxis and buys 12 electric cars to replace them. How many years will it take to reduce their old taxi fleet to below 50% of their entire fleet if they started in 2003.	Choose the correct choice from the following choices:
A) 3  B) 4  C) 1  D) 2  E) 10
Total fleet--50   End of year 2003 -- (retires 10 and buys 12) total fleet--52(40 old 12 new).   End of year 2004 -- (retires 10 and buys 12) total fleet--54(30 old 24 new).   End of year 2005 -- (retires 10 and buys 12) total fleet--56(20 old 36 new).   3nswer is 3--after 3 years the company has a total of 56 taxis (20 old 36 new), the old taxis are already less than 50% of its fleet.
<result>A</result>
A taxi company with a fleet of 50 taxis, plans to replace all their taxis with electric cars. Every year it retires 10 of their old taxis and buys 12 electric cars to replace them. How many years will it take to reduce their old taxi fleet to below 50% of their entire fleet if they started in 2003.