This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Which of the following is derived from Ist arch? \nSelect and explain. \nA. Frontonasal process, B. Maxillary process, C. Mandibular process, D. Both maxillary & mandibular processes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Face is developed from five facial primordia appear as prominences of mesenchyme:?One frontonasal process : Begins as a proliferation of mesenchyme on ventral surface of developing brain.Two maxillary processes : Grow out from the upper end of each first arch.Two mandibular processes : Grow from each first arch.', 'role': 'assistant'}]