when the current flows from A to B, the end A will be in north pole
when the current flows from A to B, the end A will be south pole
when the current flows from A to B, the end B will be south pole
none of the above
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this is a typical example of lenz law, which state that the induced emf is in such a direction as to oppose the motion producing or change producing it.
Easy mnemonics
po_S_itive to N_egative terminal
S_outh to N_orth pole
i dunno if it helps though.
Myschool... Is the textbook wrong in this diagram?... cause I'm still a bit confused.... the direction of the current in the textbook and your explanation are the same, but the poles of the magnet are not the same... .... please a little more explanation on the clockwise and anti clockwise direction 
in a magnetic field electrons flow from positive to negative that is north to south.. A in the diagram is north pole and B is south
