In the key of the book its 10uA. I think that current is coming from Vcc.
If you mean the current from the + and - 2.5v rails, it will be 1 ma plus whatever IE is supposed to be.
The question is too ambiguous, not being asked for the current at a specific location and not being told how to deal
with Rc.
One thing that is fairly certain is the output transistor base current should be 10 uA at idle and have a range
of zero to 20 uA with signal applied.