There are 7 parts of one question. Please assist.

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Gore Inc. recorded a loss and a liability in 2016 for probable litigation losses of $2 million. Ultimately, $5 million in legitimate warranty claims were filed by Gore's customers in 2017. Select one: a. Gore needs to correct an accounting error. b. Gore is not required to make any accounting adjustments to the beginning retained earnings of 2017. .o. Gore is required to adjust a change in accounting estimate retropectively. d. Gore has made a change in accounting principle, requiring retrospective adjustment