Answer:
A. Germany failed to pay the reparations on time.
Step-by-step explanation:
In the wake of economic crises, as the currencies declines, Germany failed to pay what they were supposed to by the Treaty of Versailles. Their request to suspend the payment until the currencies get stable was declined by the Allies, and they were not able to repay what they ought to.
As an indicator that they are serious about resolves of the Treaty of Versailles, France and Belgium invaded the Ruhr region on January 9th of 1923. This region had economic prosperity, factories, and resources, and the invaders wanted to take those in exchange for unpaid debt.