(10 marks from problem 13.3) The BLP model imposes the ss-property and the *-property on every element of b, but does not explicitly state that every entry in M must satisfy the ss-property and the*-property. a. Explain why it is not strictly necessary to impose the two properties on M. b. In practice, would you expect a secure design or implementation to impose the two properties on M? Explain. The answer on the website is not helpful