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#A
#B
#C
#D
Explanation:
private functions and variables are accessible only within the defining contract. They cannot be called or overridden by child contracts, which blocks inheritance-based modification entirely.
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#A
#B
#C
#D
Explanation:
If a modifier reverts after the _ placeholder executes, the entire transaction is reverted. All state changes made inside the function and modifier are rolled back due to Ethereum’s atomic execution model.
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