Bench structure help (A or B?)

Hello! I do know little or no about structure or wood-working, however I must construct some benches for teenagers to take a seat on. These benches have 3 legs, and helps from the skin to the middle. Ought to I construct them like A in order that the helps go downwards to the middle or like B in order that the helps go upwards to the center?

(I might additionally do 1 lengthy assist from the left to the proper, nevertheless it’s fairly asymmetrical and I don’t see it serving to all that a lot)

What ought to I do?