Answer
We expect the formation of Zaitsev product because the reaction does not employ a sterically hindered base.
Work Step by Step
The double bond is formed between α and β positions. Because β position has only one proton we expect this reaction to be stereospecific, rather than stereoselective.
After drawing the Newman projection we see that the drawn conformation is already antiperiplanar so we do not need to draw another conformation! Antiperiplanar conformation is important because E2 reactions only take place in this conformation.
Newman projection shows us the stereochemical outcome.
