Beyoncé is a little too young to have watched the “Carter Country” sitcom that aired on ABC from 1977 to 1979 — when Richard Paul’s Mayor Teddy Burnside character would dismissively tell his subordinates to “Handle it, handle it.” Well, five decades later, the new boss of “Carter Country” is none other than Beyoncé Knowles-Carter.On Tuesday, the hottest new cowgirl in the game announced that “Carter Country” would be the title of the country-themed “Act II” of her “Renaissance” trilogy — in a nod to her married name as the wife of Shawn “Jay-Z” Carter.Anticipation has been building to Country Bey’s album-length arrival after she dropped the twangy twosome of “Texas Hold ’Em” and “16 Carriages” on Super Bowl night Feb. 11.