I don't think your logic (or mine) has anything to do with it. It seems to say that either the Prima Facie Speed Limits (Section 22352, and 22357), or the Basic Speed Law (22350) take precedence, whichever is greater. And you will need "competent evidence" that your speed did not exceed the Basic Speed Law, in the case that you were in excess of the Prima Facie Speed Limits.
As I read Chapter 7, Article 1 of the California Vehicle Code, "C)" is the only correct answer possible.
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