The diagram below shows the economic cycle of an economy.

All other things being equal, which of the following is the most likely consequence as the economy moves along the path from point X X\,X to point ZZZ?
A widening of the cyclical budget deficit due to the operation of automatic stabilizers.
A decrease in cyclical unemployment as firms utilize spare capacity.
An increase in planned business investment driven by the accelerator effect.
A rise in demand-pull inflation due to a growing positive output gap.