This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Human identification, Subject name: Forensic Medicine
Crown Rump Length is 20 cm, length of lower limb is 11 cm. Which of the following is a false statement ? 
Select and explain. 
A. Rule of Hasse states that gestational age of a fetus upto 5 months is estimated by under-root of crown heel length, B. Morrison's rule states that gestational age of fetus after 5 months is crown heel length (CHL)/ 5, C. CHL is equal to crown rump length + length of lower limb, D. Gestational age of the fetus will be 7-8 months
D: Gestational age of the fetus will be 7-8 months
Answer: D: Gestational age of the fetus will be 7-8 months 
Explanation: Rule of Hasse states that gestational age of a fetus upto 5 months is estimated by under-root of crown heel length. Morrison's rule states that gestational age of fetus after 5 months = crown heel length (CHL)/ 5 so, here CHL = crown rump length + length of lower limb CHL = 20+11 = 31 Gestational age = 31/5 [?] 6 months.