Ononot — In the context of the standard translation of modal logic in

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In the context of the standard translation of modal logic into classical first-order logic, each world $w$ is represented by a first-order variable, and the accessibility relation is represented by a binary predicate $R(x, y)$ . Which of the following first-order formulas represents the standard translation $\text{ST}_x(\Box(\Box P \implies Q))$ ?