(Reuters) – Canada’s main stock index opened lower on Tuesday, weighed down by materials shares, while declines were limited by cementing bets of a June interest rate cut by the Bank of Canada after a domestic inflation data reading. At 9:30 a.m. ET (13:30 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 82.59 points, or 0.38%, at 21,657.61. (Reporting by Purvi Agarwal in


