Which of the following resonating structure of 1-Methoxy-1,3-butadiene is least stable?
A. `overset(Theta)CH_(2)-CH=CH-CH=overset(o+)O-CH_(3)`
B. `CH_(2)=CH-overset(Theta)CH-CH=overset(o+)O-CH_(3)`
C. `CH_(2)=CH-overset(o+)CH-Choverset(Theta)CH-O-CH_(3)`
D. `CH_(2)=CH-overset(Theta)CH-overset(o+)CH-O-CH_(3)`
