Given below are two quantities named A and B. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose between the possible answers.

Quantity A: A boat goes 8 km upstream and comes back in 6 hours. Speed of the current is 1 km/hr then find the time taken by the boat to travel the same distance in still water. 

Quantity B: 2 hours