Pick all that apply

• 1Choice 1.

  If the same item identifier appears twice in one snapshot, it crashes at runtime

• 2Choice 2.

  If you use the whole model struct (Hashable over every field) as the item identifier, changing just the title triggers a delete plus insert animation

• 3Choice 3.

  apply(_:animatingDifferences:) must be called on the main thread and crashes immediately if called from a background queue

• 4Choice 4.

  reconfigureItems keeps the cell instance and reruns only the configure closure, while reloadItems dequeues a new cell

• 5Choice 5.

  With a Diffable Data Source you still have to implement UICollectionViewDataSource methods like numberOfItemsInSection yourself