You're right WBAhn, I should have said I don't understand how the magnitude of the transfer function can be greater than one. But I think I understand now.

 

Based on your early posts, I think there is a lab experiment going on here.

Be aware that your calculations so far have involved ideal inductors and capacitors--components without parasitic losses. If you work out the transfer functions where a resistance is places in series with the inductor, you will find the 3 dB frequencies for circuit A and B, or for circuit C and D, are not the same.

So your lab measurements may not show the same 3 dB frequencies where the calculations on ideal components did.