Arrange the following groups in the order of decreasing (-I) effect.

• A. CN > F > Br > Cl > COOH > I > H
• B. COOH > CN > F > Br > Cl > I > H
• C. H > COOH > CN > I > Cl > F > Cl
• D. CN > COOH > F > Cl > Br > I > H