Explanation:

102nd Amendment Act of 2018

• It introduced Articles 338B and 342A in the Constitution.
• Article 338B deals with the newly established National Commission for Backward Classes.
• Article 342A empowers the President to specify the socially and educationally backward communities in a State. 
• It says that it is for the Parliament to include a community in the Central List for socially and backward classes for grant of reservation benefits.

Deprived States of the Power to Identify SEBCs

• There will only be a single list of SEBC with respect to each State and Union Territory notified by the President of India, and that States can only make recommendations for inclusion or exclusion, with any subsequent change to be made only by Parliament.
• The Bench unanimously upheld the constitutional validity of the 102nd Amendment but differed on the question whether it affected the power of states to identify SEBCs.

Hence only statement 1st is correct.