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: Unknown
X-linked dominant disorder: 
Select and explain. 
A. Vitamin D resistant rickets, B. Familial hypercholesterolemia, C. Red green color blindness, D. Achondroplasia
A: Vitamin D resistant rickets
Answer: A: Vitamin D resistant rickets 
Explanation: Ans. (a) Vitamin D resistant ricketsRef: Robbins pathology 9th ed. /142Vitamin D resistant ricketsPHEX gene. X linked dominantFamilial hypercholesterolemiaautosomal dominantRed-green color blindnessX linked recessiveAchondroplasiaAutosomal dominantPlease refer to the explanation of more details.