Wind direction and velocity puzzle

Consider the map with isobars below for a location in Earth's northern hemisphere (L indicates a low-pressure center, H a high pressure center).

Ignoring the effects of friction with the Earth,
1)  from what direction is the wind at A blowing?
2)  from what direction is the wind at B blowing?
3)  from what direction is the wind at C blowing?
4)  from what direction is the wind at D blowing?
5)  in which location is the wind strongest?

Answers:

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