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: Pediatrics
Which of the following malformation in a newborn is specific for maternal insulin dependent diabetes mellitus ? 
Select and explain. 
A. Transposition of great arteries, B. Caudal regression, C. Holoprosencephaly, D. Meningmyelocele
B: Caudal regression
Answer: B: Caudal regression 
Explanation: The fetal malformations seen in Caudal regression syndrome are the most typical seen in cases of maternal diabetes'.- Early detection of caudal regression syndrome, D. Subtil et al.
Caudal regression :

Caudal regression syndrome (CRS) is a rare malfonnative syndrome seen mainly in cases of maternal diabetes with poor metabolic control.
This syndrome associates vertebral agenesis of variable level with genito-urinary and digestive malformations. These abnormalities are related to the impaired development of the mid-posterior axis mesoderm