Arrange the following resonating structures in the order of decreasing stability :
(a) `underset(("Vinyl chloride"))underset((I))(CH_(2)=CH-ddotunderset(..)Cl: )harrunderset((II))( :overset(Theta)(CH_(2))-CH=overset(o+)underset(..)Cl: )harrunderset((III))(overset(o+)CH_(2))-CH=underset(..)ddotCl^(Theta)`
b. `underset(("Formic acid"))underset((IV))(H-overset(ddotO: )overset(||)C)-underset(..)ddotOH harrunderset((V))(H-overset( :ddotO:^(Theta))overset(|)(C)=underset(o+)ddotO)-H harrunderset((VI))(H-overset( :ddotO:^(Theta))overset(|)underset(o+)(C)-underset(..)ddotO-Hharr) underset((VII))(H-underset(ddotTheta)overset( overset(o+):O: )overset(|)C-underset(..)ddotO-H)`
( c) Write the resonating structure of phenol in order of decreasing stability.

Options

A. `I gt II gt III`
B. `III gt II gt I`
C. `II gt I gt III`
D. `I gt I -= III`

Answer

A