What are the three methods of settlement prediction in soils with rapid compressibility? I- Rational methods II- Semi-empirical methods III- Empir...

What are the three methods of settlement prediction in soils with rapid compressibility?

I- Rational methods
II- Semi-empirical methods
III- Empirical methods
a) Only I and II are correct.
b) Only II and III are correct.
c) All of them are correct.