Which of the following local/global truncation errors are correct for the Backward Euler method? □O (At²) local, O (At-¹) global □ O (At) local, O (At) global □O (At) local, O (at²) global □O (At²) local, O (at²) global Po (At) local local, O (At) global None of others answers are correct □O (At5) local, O (At4) global

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