This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Lens), Subject name: Ophthalmology
[{'content': 'Surface ectoderm forms: \nSelect and explain. \nA. Lens of eye, B. Retina, C. Iris, D. Corneal stroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Lens of eyeRef: A.K. Khurana 6th ed. /12; Khurana 4th ed/ 10Surface EctodermNeural EctodermMesodermNeural Crest* Conjunctival Epithelium* Corneal Epithelium* Lacrimal gland* Tarsal gland* Lens* Smooth muscle of Iris* Iris Epithelium* Ciliary Epithelium* Retina & its pigment epithelium* Optic nerve fibre* Part of vitrous* EOM* Sclera* Iris* Vascular endothelium* Choroid* Part of vitrous* Corneal stroma* Ciliary ganglion* Schwann cell* Uveal and conj melanocytes* Meningeal sheath of ON* Part of vitrous', 'role': 'assistant'}]