OTTAWA — Some economists say surprisingly strong September inflation figures will give the Bank of Canada pause ahead of its interest rate decision next week. Annual inflation accelerated to 2.4% last month, Statistics Canada said Tuesday. That’s a jump of half a percentage point from 1.9% in August and a tick higher than economists’ expectations. …The September inflation report will be the Bank of Canada’s last look at price data before the central bank’s next interest rate decision on Oct. 29. The central bank lowered its benchmark interest rate by a quarter point to 2.5% at its last decision in September. The Bank of Canada’s preferred measures of core inflation showed some stubbornness in September, holding above the three per cent mark. “This will make the Bank of Canada’s decision a bit more interesting next week than previously expected,” said BMO chief economist Doug Porter.