Swift Auto Layout

A project includes a UIStackView with vertically arranged views. The task is to change the orientation of the stack view to horizontal when the device's

orientation changes, from portrait to landscape and vice versa.

Which of the following implementations of the traitCollectionDidChange$(\_$ method achieves this?

Pick ONE option

override func traitCollectionDidChange $(\_$ previousTraitCollection: UITraitCollection?$)\{$

super.traitCollectionDidChange$($previousTraitCollection$)$

if traitCollection.verticalSizeClass $!=$ previousTraitCollection?.verticalSizeClass $\{$

stackView.axis $=$ traitCollection.verticalSizeClass $==.$ compact $?.$ horizontal : $.$vertical

$\}$

$\}$