During the anti-government movement of 1977, who was the president of PNA (Pakistan National Aliance)?

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During the anti-government movement of 1977, who was the president of PNA (Pakistan National Aliance)?A. Maulana Muftti Mehmud
B. Nawabzada Nasarullah khan
C. Air Marshal(Retd) Asghar Khan
D. Khan Abdul Wali khan