What is the test for a de novo review of an order sustaining a demurrer?

"In our de novo review of an order sustaining a demurrer, we assume the truth of all facts properly pleaded in the complaint or reasonably inferred from the pleading, but not mere contentions, deductions, or conclusions of law. [Citation.] We then determine if those facts are sufficient, as a matter of law, to state a cause of action under any legal theory. [Citation.]" (Intengan v. BAC Home Loans Servicing LP (2013) 214 Cal.App.4th 1047, 1052.) "In order to prevail on appeal from an order sustaining a demurrer, the appellant must affirmatively demonstrate error. Specifically, the appellant must show that the facts pleaded are sufficient to establish every element of a cause of

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