In a passenger vehicle, only one seat remains vacant, who should take it?

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This is the situation. In a passenger vehicle, let it be a bus or train. Only one seat remains vacant, it's three of you who wanted to take the seat, 1)a pretty and sexy girl, 2)an old woman and 3)yourself. Who would you offer the remaining seat? This topic is a question for men, but girls you can also comment if you want to. So guys, what is your answer?