Low oxidation state of metals in their complexes are common when ligands :

Given below are two statements:

Statement I : The non bio-degradable fly ash and slag from steel industry can be used by cement industry.

Statement II : The fuel obtained from plastic waste is lead free.

In the light of the above statements, choose the most appropriate answer from the options given below :

The structure of A in the given reaction is :

Major product '$$\mathrm{B}$$' of the following reaction sequence is :