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
A 28 year old female patient complains of abdominal pain and swelling. Patient gives h/o multiple diagnostic CT-scans of the abdomen and pelvis. Patient is 10 weeks pregnant. Which of the following effects may be present in this fetus? 
Select and explain. 
A. Microcephaly, B. Mental retardation, C. Both of the above, D. None of the above
C: Both of the above
Answer: C: Both of the above 
Explanation: In humans, fetal irradiation is associated with microcephaly (irradiation at 8 to 15 weeks gestation) and mental retardation (irradiated at 8 to 25 weeks gestation).
 
Reference: White and Pharoah, Oral radiology, ed 8th, pg-96