"B. amount overspent in a certain time" is the only correct choice here.
Here's why:
The definition of budget deficit: A budget deficit is an indicator of financial health in which expenditures exceed revenue. The term budget deficit is most commonly used to refer to government spending rather than business or individual spending but can be applied to all of these entities.
So, this means basically that the government is overspending, as indicated in the answer choice B.
I hope my response satisfies your query. Please comment if you require further assistance.
