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: Anatomy
Bowman's corpuscle is derived from: 
Select and explain. 
A. Pronephros, B. Mesonephros, C. Metanephros, D. None of the above
B: Mesonephros
Answer: B: Mesonephros 
Explanation: The mesonephros and mesonephric ducts are derived from intermediate mesoderm from upper thoracic to upper lumbar (L3) segment. Early in the fouh week of development, during regression of the pronephric system, the first excretory tubules of the mesonephros appear. They lengthen rapidly, form an S-shaped loop, and acquire a tuft of capillaries that will form a glomerulus at their medial extremity. Around the glomerulus, the tubules form Bowman's capsule, and together these structures constitute a renal corpuscle. Laterally, the tubule enters the longitudinal collecting duct known as the mesonephric or wolffian duct Ref: Langman's embryology 11th edition Chapter 15.