The Biba Model.

Which security model enforces the integrity of knowledge by stating: Simple Integrity Axiom- A subject cannot read data from an object of lower integrity level, * Integrity Axiom- cannot write data to an object at a higher integrity level, and Invocation Property -> cannot invoke (call upon) subjects at a higher level? - The Bell-LaPadula Model - The Biba Model - The Clark-Wilson Model - The Brewer-Nash Model