Volatility has returned to Wall Street after the rally, which started in early January, came to a sudden halt last week after fresh data showed that inflation rose last month. An unexpected jump in inflation has once again dimmed hopes of the Federal Reserve going for its first rate cut in March.The Commerce Department last week reported that the consumer price index (CPI) rose 0.3% month over month in January and 3.1% from a year ago. Also, core CPI, which excludes the volatile energy and food prices, rose ...