This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intestinal obstruction, Subject name: Surgery
A 70 years old male was brought to the emergency with colicky pain in lower abdomen & non-passage of feces and flatus. The abdominal X-ray findings are given below. Which of the following is the preferred treatment option for this patient? 
Select and explain. 
A. Colonoscopic detorsion, B. Elective sigmoid colectomy, C. Paul-Mikulicz operation, D. Colonoscopic detorsion followed by elective sigmoid colectomy
D: Colonoscopic detorsion followed by elective sigmoid colectomy
Answer: D: Colonoscopic detorsion followed by elective sigmoid colectomy 
Explanation: Given Abd X-ray - Coffee bean sign / Omega sign / Bent inner tube | Sigmoid volvulus TREATMENT:- Colonoscopic detorsion After 3 days sigmoid colectomy Ischemia / strangulation / perforation - Emergency condition | Immediate colonic resection