PT59.S2.Q19 - If anyone could clarify where I’m misunderstanding

aminata3

Hello! If anyone could clarify where I’m misunderstanding, I would be so grateful!
So the diagram for this is: (B - banker, A - athlete, L - lawyer)
B —> A
L—> /B (the contrapositive would be B —> /L)
—
So you can conclude A <—s—> /L (some athletes are not lawyers- which I believe is the right answer.)

Taking the contrapositive of the first statement is where I have some issues:
/A —> /B
L —> /B
—
/A <—s—> L

And since some is bidirectional, it seems wrongly to read like B (some non-athletes are lawyers or some lawyers are non- athletes)?