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: Ophthalmology
Which of the following are orbital tumours a) Glioma    b) Lymphoma   c) Chloroma  d) Meningioma  e) Schwannoma 
Select and explain. 
A. abcde, B. abd, C. abc, D. acd
A: abcde
Answer: A: abcde 
Explanation: Orbital tumors
Primary :- Optic nerve glioma, optic nerve sheat meningioma, cavernous hemangioma, schwannoma, lymphoma.
Secondary :- Squmous cell carcinoma, malignant melanoma.
Metastasis :

Adult :- Breast, lung, prostate, kidney, GIT, melanoma.
Children :- Neuroblastoma, Ewing's sarcoma, chloroma, wilm's tumor, histiocytosis, testicular embryonal sarcoma, ovarian sarcoma.