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: Radiology
Maximum recommended external beam radiation therapy dose for a case of carcinoma cervix is – 
Select and explain. 
A. 80 Gy, B. 70 Gy, C. 50 Gy, D. 35 Gy
C: 50 Gy
Answer: C: 50 Gy 
Explanation: External-beam doses of more than 40 to 45 Gy to the central pelvis tend to compromise the dose deliverable to paracentral tissues and increase the risk of late complications. However, recently 1MRT (Intensity Modulated Radiotherapy) allows delivery of doses exceeding 60 Gy with relative sparing of adjacent critical structures".
"Using conventional fractionation, a dose of40-50 Gy in 20-25 fractions over a period of 4-5 weeks is recommended."