The least and most stable resonating structures respectively are:

The least and most stable resonating structure respectively are :

The least and most stable resonating structure respectively are :

The least and most stable resonating structure respectively are: (1) CH_(2)=CH-CH-CH-C-CH_(3) (2) CH_(2)=CH-CH-CH=C-CH_(3)O^(Theta) (3) CH_(2)-CH-CH=CH-C-CH_(3) (4) CH_(2)=CH-CH=CH-C-CH_(3) (А) 1,4 (В) 2,3 (С) 4,1

The most stable resonating structure is

The most stable resonating structure is

Which is the most stable resonating structure?