This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
Acceptable safe dose of radiation during pregnancy is 
Select and explain. 
A. 0.5 rad, B. 1 rad, C. 2 rad, D. 5 rad
D: 5 rad
Answer: D: 5 rad 
Explanation: Exposure to radiation is a positive danger to the developing fetus. The most common source of radiation is abdominal X-ray during pregnancy.Leukemias are significantly seen in children exposed to intrauterine X-ray in addition to congenital malformationsX-rays should be carried out only for definite indications with dosage kept to a minimum Ref: Park; 23rd ed; Pg 527