Among the proposed formulas, the IW axiom is Choose one or more answers: O a. (-(F → G)→(¬G →¬(F → G). O b. (¬F → (H →¬G)) → ((F →G)→H)). OC(¬G → F)→ (¬a →¬¬F)→G). O d. ((F → F)→ F) → (F → F). O e. (F → (G →H))→ ((G → F)→ (H → F)).

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