George takes 4 minutes to go from 1st floor to 3rd floor. He just realised that he forgot his water bottle on the 5th floor. He is now on the 2nd floor. How long would it take him to get his watter bottle? 
选项为:A:4 minutes  B:5 minutes  C:6 minutes  D:8 minutes  E:None of the above.  请回答其中一个选项.