The special reservation of 4% in favour of Muslims was struck down as unconstitutional (in 2010) by

The correct choice is: “High Court of Andhra Pradesh”

Andhra Pradesh had provided 4% reservation in education and public employment to socially and educationally backward classes among Muslims through the Andhra Pradesh Reservation in favour of Socially and Educationally Backward Classes of Muslims Act, 2007. On 8 February 2010 a seven-judge bench of the Andhra Pradesh High Court (by 5:2, in T. Muralidhar Rao v. State of A.P.) struck the Act down, holding that the identification of backward classes was flawed and that religion-based classification was impermissible. The State appealed, and the Supreme Court allowed the quota to continue on an interim basis.