Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene.

Smoking tendency of hydrocarbons increases in the order: paraffins isoparaffins naphthenes aromatics

Smoking tendency of paraffins increases with decrease in its molecular weight

Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond

Smoking tendency of aromatics decreases with increase in its molecular weight