A. Everyone has the idea of a father, and the idea of God is just an extrapolation of that |
B. It can be proved mathematically that we have the idea of God |
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C. You don't have to have the idea of God in order to accept that He exists | D. Anyone who denies that he has the idea of God is demonstrably wrong | ||
Descartes thinks it can be proved that we have the idea of God, but the proof he gives is not mathematical. So (D) is the correct answer.
Descartes doesn't think either (A) or (C).