Which of the following structure is similar to graphite ?

Boron nitride or borazone formula is (BN)n→ Boron nitride has graphite like layer structure.Graphite is conductor,where as boron nitride is non conductor due to polarity of B—N bond in boron nitride.→ Boron nitride is called inorganic graphite since its structure is similar to that of graphite→ Due to its layer like structure it is slippery in nature hence   it is used as lubricant.