This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Types of Genetic Disorders, Subject name: Pediatrics
[{'content': 'Which of the following is indicated by the pedigree given below? \nSelect and explain. \nA. Adopted into family, B. Adopted out of family, C. Identical twins, D. Nonidentical twins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]