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: Social & Preventive Medicine
Which type of variable “Social Class” is, if it has four categories-I to V and Class I is the highest social class and Class V is the lowest? 
Select and explain. 
A. Dichotomous, B. Ordinal, C. Nominal, D. Interval
B: Ordinal
Answer: B: Ordinal 
Explanation: None