By CHRISTOPHER RUGABER
AP Economics Writer
WASHINGTON (AP) — The Federal Reserve will have to keep boosting its benchmark interest rate to a point that raises unemployment and gets inflation down from unusually high levels. That’s according to two central bank officials in separate remarks Monday. The comments from both officials added to an ongoing debate about how badly the Federal Reserve’s rate hikes — the fastest in more than 40 years — will hurt the economy. By lifting its benchmark rate, the Fed is pushing up the cost of a wide range of consumer and business loans, including for mortgages, auto loans, and credit cards.