單項選擇題

What is necessary for a subject to have read access to an object in a Multi-Level Security Policy?什么對于主體在多層安全策略中擁有對一個客體的訪問權限是必要的?()

A. The subject's sensitivity label must dominate the object's sensitivity label.主體的敏感性標識必須支配客體的敏感性標識
B. The subject's sensitivity label subordinates the object's sensitivity label.主體的敏感性標識從屬于客體的敏感性標識
C. The subject's sensitivity label is subordinated by the object's sensitivity label.主體的敏感性標識被客體的敏感性標識從屬
D. The subject's sensitivity label is dominated by the object's sensitivity label.主體的敏感性標識以客體的敏感性標識為主體

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