对脑栓塞的患者，下列哪种情况不适于溶栓治疗（）

A.年龄18～80岁

B.临床明确诊断缺血性卒中，并造成明确的神经功能障碍（NIHSS>4分）

C.症状开始出现至静脉干预时间>3小时但<6小时

D.卒中症状至少才持续30分钟，且治疗前无明显改善

E.患者或其家属对静脉溶栓的收益／风险知情同意

Tsogo Holdings operates a resort known as the Best Fun Resort in Maseru. The resort is very popular and on weekends more than 20,000 persons visit it. All entrances to the resort have security guards who have strict instructions to prevent people from entering the resort with anything that may endanger the security of other patrons. One Mike, a regular visitor, was asked if he had any such thing. He opened his jacket to show that he did not have any but did, in fact, have a small ejector knife in his trouser pocket. The security guards carried metal detectors and would have discovered it had they used it on Mike but they did not. Later, Mike had a quarrel with another resort visitor, Shan, outside the resort in its car park and, in the course of that quarrel, used the knife which seriously injured Shan.Required:Analyse the situation from the perspective of the law of delict and, in particular, advise Shan if he has a valid claim against Tsogo Holdings. (10 marks)