A man buys a horse for $60. After a while he sells it for 70$. Some time passes and the man regrets his decision and goes to buy the horse again. But now he has to pay $80 for it and he does. After a while he regrets to have bought the horse back and sells it for $90. Now in total, how much loss/profit did the man make from the three transactions?
A.$10
B.- $20
C.$20
D.0
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