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: Pathology
a malignant epithelial cell neoplasm derived from any of the three(e) germ layers is referred to as: 
Select and explain. 
A. sarcoma, B. carcinoma, C. teratoma, D. mixed cell tumor
C: teratoma
Answer: C: teratoma 
Explanation: A teratoma is a tumor made up of several different types of tissue, such as hair, muscle, or bone.
 They typically form in the ovaries, testicles, or tailbone and less commonly in other areas.
 Symptoms may be minimal if the tumor is small.
 A testicular teratoma may present as a painless lump.
 Complications may include ovarian torsion, testicular torsion, or hydrops fetalis