Schweser Q 1853 Hyphotesis testing concerned, testing, correct

ba736

If i am concerned whether a pupulation mean is 0.
My null hyphothesis should be ‘u’ not equal to 0.
My Alternative should be ‘u’ = 0 .
Am I correct or not?
Schweser answer seems to be the other way round.
I thought Null should always be the case where we are trying to reject?
Thanks for your help!