How to correctly AC ground the negative input of a RCA input?

Hello everyone,

I would like to ask you to point me in the correct direction. I am building a class D amplifier utilizing the TPA3128D2. In the datasheet I have read that "To use the TPA31xxD2 with a single-ended source, ac ground the negative input through a capacitor equal in value to the input capacitor on positive and apply the audio source to either input.".

Which one of these is correct?
IMG_0940.JPG


Thank you.