WordPress 3.8 – Dashboard 1 Column Screen Options

With the new WordPress 3.8 under Screen Options they seem to have misplaced the “Columns” feature where you could put your widgets into 1 Column, 2 Columns, 3 Columns, or 4 Columns. My question is how to I force my Dashboard Widgets to only be 1 column, or in other words, take up the whole width of the screen versus just a portion of the screen?