NEET 2022 Chemistry question on Equilibrium

1. A.
   Diamond and graphite have two dimensional network.
2. B.
   Diamond is covalent and graphite is ionic.
3. C.
   Diamond is $sp^3$ hybridised and graphite is $sp^2$ hybridized.
4. D.
   Both diamond and graphite are used as dry lubricants.

[NEET 2022]