某住宅楼的主体改造经过验收合格后，开始进入装饰装修施工阶段。在抹灰施工中，现场技术人员检查发现工人有以下施工行为，其中不正确有( )。

A．在混凝土柱和隔墙(陶粒混凝土砌块)交接处表面的抹灰，采取挂钢丝网后，再用抹灰的方法进行施工

B．抹灰用砂子应选用细砂，砂子进场后直接进行拌制时，应严格按照配合比投料

C．原有墙面的石灰砂浆抹灰层强度为M5，施工人员采用强度为M2.5水泥砂浆进行面层施工

D．用水泥砂浆和水泥混合砂浆抹灰时，应待前一抹灰层凝结后方可抹后一层；用石灰砂浆抹灰时，应待前一抹灰层七八成工后方可抹后一层

E．抹灰用石灰膏的熟化期不应少于7天；罩面用磨细石灰粉的熟化期不应少于3天

ABC Limited is a private limited liability company having 99% of its issued shares subscribed to by John Abela and the remaining 1% by his brother Paul Abela. Paul Abela also holds the post of director together with his brother. Paul Abela passed away in January 2007 leaving his brother John Abela as his sole heir. Despite such events ABC Limited has continued to trade.Required:

(a) Explain whether ABC Limited can continue to exist with a sole shareholder; and (4 marks)