Based on research that has been done regarding the relationship between deficits and interest rates it can be concluded that:（）
A. year-to-year data indicate a p relationship between budget deficits and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.
B. year-to-year data indicate a loose relationship between budget surpluses and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.
C. year-to-year data indicate a loose relationship between budget deficits and interest rates but over a more lengthy period, persistently large budget deficits do lead to higher interest rates as implied by the crowding-out model.
