SINGAPORE (Reuters) -Oil prices ticked up on Tuesday as investors played cautious ahead of key interest rate decisions and inflation data releases, but concerns over supply surplus and slower demand growth kept a lid on gains. Brent crude futures for February were up 26 cents, or 0.3%, to $76.29 a barrel as of 0342 GMT, while U.S. West Texas Intermediate crude futures for January delivery gained also gained 26 cents, or 0.4%, at $71.58 a barrel. “All attention will be on the US CPI data today to potentially set the tone for US policymakers at their upcoming meeting,” said Yeap Jun Rong, market…