[" The bond length between "sp^(3)" hybridised "],[" Q."13" carbon atom and other carbon atom is "],[" minimum in "]

In which of the following compounds, the bond length between hybridised carbon atom and other carbon atom is minimum?

The bond length between central carbon atom and other carbon atom is minimum in

The bond length between central carbon atom and other carbon atom is minimum in

The bond length between central carbon atom and other carbon atom is minimun in

The bond length between sp hybrid carbon and other carbon is minimum in:

All carbon atoms are sp^(2) hybridised in