The correct answer is (d). Khazain-ul-Futuh was not written by Amir Khusrau. It was written by Amir Timur, the founder of the Timurid Empire.
Amir Khusrau was a 13th-century Indian poet, musician, and Sufi saint. He is considered one of the greatest poets in the Persian language. He wrote many books, including Nuh Sipihr (The Seven Heavens), Deval Rani-Khizr Khan (The Story of Deval Rani and Khizr Khan), and Taj-ul-Masir (The Crown of the Journey).
Khazain-ul-Futuh (The Treasury of Victories) is a historical chronicle written by Amir Timur. It recounts Timur’s military campaigns and conquests. The book is written in Persian and is considered an important source of information about Timur’s life and times.