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

• A. Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics
• B. Smoking tendency of paraffins increases with decrease in its molecular weight
• C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond
• D. Smoking tendency of aromatics decreases with increase in its molecular weight