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
Which of the following procedures is routine technique for karyotyping using light microscopy: 
Select and explain. 
A. C-banding, B. G-banding, C. Q-banding, D. V-staining
B: G-banding
Answer: B: G-banding 
Explanation: G-banding which includes staining with Giemsa is the most common technique used for karyotyping Q-banding- fluorescent pattern obtained using quinacrine for staining C-banding- selective chromosome stain in which Giemsa stain is used to stain heterochromatic regions close to the centromeres V-staining- method for detecting apoptotic cells.