A day after the Centre announced the extension of coronavirus lockdown, West Bengal Chief Minister Mamata Banerjee on Monday announced that the extension will be applied in the state as well till May 31. “The containment zones in urban and rural areas have been divided into three categories: A – affected zones; B – buffer zone and C – clean zone. While all shops will be closed in A zones, in B zones only some activities will be happening and the C zones will be completely open,” Banerjee said at a video conference.Covid-19 crisis: West Bengal extends lockdown till May 31, relaxations announced