What is the key difference between tiled and floating items in Tableau?

$1$ point

Tiled items always have a square layout; floating items are always based on circles.

Tiled items create a single$-$layer grid that contains no overlapping elements; floating items can be layered over other objects.

Tiled items can be layered over other objects; floating items create a single$-$layer grid that contains no overlapping elements.

Tiled items are connected by straight lines; floating items are unconnected.