As for understanding on the physical meaning of frequency response，which are correct for the following statements？（ ）
选项：

A:The magnitude response shows that how the system affects amplitude attenuation of each frequency component in the input signal.
B:The phase response shows that how the system affects time delay of each frequency component in the input signal.
C:For a complex exponential input signal with single frequency, the output of an LTI system is also a complex exponential signal of the same frequency.
D:For a complex exponential input signal with single frequency, the output of an LTI system is a complex exponential signal of the different frequency.