Why Do Texas Budgets Not Run into Debt

Why do Texas budgets not run into debt?

A) The oil booms of the last century have always provided plenty of income.
B) The Texas constitution places several limitations on the ability of the legislature to get into debt.
C) The political ideology of Texas has always made borrowing money politically unpopular.
D) The tax levels have always been among the highest in the nation, so there is plenty of money available.
E) The money brought in by the recent high-tech boom has offset any debt the state might have incurred.