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: Medicine
Dyspnoea at rest is which grade: September 2009 
Select and explain. 
A. 1, B. 2, C. 3, D. 4
D: 4
Answer: D: 4 
Explanation: Ans. D: 4 New york hea association score (NYHA) There are four functional grades of Dyspnea as follows:- Grade I (minimal Dyspnea): Dyspnea on running or on doing more than ordinary effo . Grade II : on doing ordinary effo. Grade III (considerable Dyspnea) : on doing less than ordinary effo . Grade IV : Dyspnea at rest. *Ordinary effo is that of the person himself as regard his previous effo tolerance and usual life style.