A developer is designing a game where each player has a fixed set of attributes $($e$.$g$.,$ strength, agility$)$ but can collect an unpredictable number of items. If memory usage efficiency and fast attribute access are top priorities, but item access can be slightly slower, what collection structure should the developer use?

Use a dynamic collection for both player attributes and items.

Use a fixed collection for player attributes and a dynamic collection for items.

Store everything in a single dynamic collection and access items based on attribute values.

Use a fixed collection for both player attributes and items.