In the following reaction,<br><img src="/images/question-image/engineering-chemistry/basics-of-organic-reaction-mechanism/1690543655-in-the-following-reactionthe-absolute-configurations.png" title="Basics of Organic Reaction Mechanism mcq question image" alt="Basics of Organic Reaction Mechanism mcq question image"><br>the absolute configurations of the chiral centres in X and Y are