What is the reason for choosing height error gain in such a way that the frequency of height loop is below the bandwidth of the pitch attitude loop?

What is the reason for choosing height error gain in such a way that t

1.	What is the reason for choosing height error gain in such a way that the frequency of height loop is below the bandwidth of the pitch attitude loop?
A.	Efficient flight
B.	Better Range
C.	Stable and damped response
D.	Better climb rate
Answer» D. Better climb rate