The correct answer is A) a supply-side effect.
This could have happened because of all the following except a supply-side effect.
On the contrary, what these measures produce is a short-run increase in the price level, an indirect crowding out, and a direct expenditure offset.
That is why the federal government has to act promptly but cautious in considering all the consequences and by-products of the decisions it is about to make. For instance, we have the actual scenario of C*vid-19 and the disastrous economic consequences in the US economy if the federal government fails in enacting the proper legislation or in creating the financial aid to support the workers and the American families.