Explanation

A is correct because Dr. Nozair Khawaja is the Pakistani Astrobiologist associated with leading such a team. B is incorrect because there is no information suggesting Dr. Salim Mehmud was involved in this specific discovery. C is incorrect because Muhammad Suhail Zubairy is not mentioned in relation to this finding. D is incorrect because Raziuddin Siddiqui is not cited as the leader of this particular scientific mission.