Darden Restaurants Inc.’s stock could see gains Wednesday after rising in extended trading Tuesday as the company posted better-than-expected fiscal second-quarter profit and sales. Darden shares rose 2% to $57 on moderate volume after the operator of the Olive Garden and LongHorn Steakhouse restaurants reportedadjusted fiscal second-quarter earnings of 28 cents a share on revenue of $1.56 billion. Analysts surveyed by FactSet expected 27 cents a share on revenue of $1.55 billion.