The task is to generate the correct answer for a given math problem.

Q: Problem: a car traveled 560 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city . if the car traveled 6 fewer miles per gallon in the city than on the highway , how many miles per gallon did the car travel in the city ?

A: 9
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Q: Problem: a train running at the speed of 40 km / hr crosses a pole in 9 seconds . what is the length of the train ?

A: 100 meter
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Q: Problem: m = { - 6 , - 5 , - 4 , - 3 , - 2 } t = { - 3 , - 2 , - 1 , 0 , 1 , 2 , 3 , 4 } if an integer is to be randomly selected from set m above and an integer is to be randomly selected from set t above , what is the probability that the product of the two integers will be negative ?

A:
1 / 2
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