Which one of the following conditions is the most suitable condition for comfort air conditioning?

Which one of the following conditions is the most suitable condition f

1.	Which one of the following conditions is the most suitable condition for comfort air conditioning?
A.	25°C DBT and 100% R.H
B.	20°C DBT and 80% R.H
C.	22°C DBT and 60% R.H
D.	28°C DBT and 40% R.H
Answer» D. 28°C DBT and 40% R.H