Pick out the wrong statement pertaining to the design of the distillation column.

• Generally, a skirt clerance of 0.5" to 1.5' is recommended to prevent plugging of the slots by residue build up.
• The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles.
• If sufficient slot area is not provided, the gas may pass through the skirt clearance.
• none of these.