Suppose the government has a unified net income of $40 billion, but was supposed to deposit $120 billion in the Social Security trust fund. What was the on-budget surplus or deficit? Explain. Select the correct choice below and fill in the answer box complete your answer. O A. The on-budget deficit was S the trust fund, all going towards the on-budget portion. billion because the government had excess income and even more money O B. The on-budget deficit was $ O C. The on-budget surplus was S billion because the government overspent its unified net income on Social Security. billion because the government had excess money remaining for Social Security. O D. The on-budget surplus was Sbillion because the government underspent its unified net income on Social Security