Why does a budget deficit increase the national debt? A The government cannot pay interest on the debt when the United States runs a budget deficit, so the United States defaults on our loans. B The government must borrow money when tax revenue is not enough to pay for government spending and interest on the national debt. C The government spends more money when there is a budget deficit because they have to pay for the government programs they did not fund. D The government encourages consumers to borrow money when there is a budget deficit and that amount adds to the overall amount owed by consumers.