Which of the following pairs is correctly matched?

Evaluating the correctness of the pairs relating administrative departments (Dewan) to rulers of the Delhi Sultanate: 1. (A) Dewan-i-bandagani (department of slaves) was established by Feroz Shah Tughlaq. This pair is correctly matched. 2. (B) Dewan-i-Mustakhraj (department to look into arrears) was established by Alauddin Khilji, not Balban. This pair is incorrect. 3. (C) Dewan-i-Kohi (department of agriculture) was established by Muhammad bin Tughlaq, not Alauddin Khilji. This pair is incorrect. 4. (D) Dewan-i-Arz (military department) was established by Balban, not Muhammad Tughlaq. This pair is incorrect.