What's the phase response through the amplifier stages minus inversion when signal frequency is 5kHz

Question

fc1 is 500Hz, fc2 is 5kHz, fc3 is 100kHz, fc4 is 1MHz

it says what's the complete phase response through the amplifier stages, minus inversions, when teh signal frequency is 5kHz. My book has no example of a program like this so I'm having a hard time with it.

Answer 1

5 khz is well above 500hz, so there is a 90 degree shift from that pole.

5KHz is right at the next pole so there is a 45 degree shift from that pole.

The other 2 poles are well above 5Khz, so they contribute nothing.

total shift is 90+45 degrees.

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