Some questions about testing sets

[aBlueMouse]

Hi, I want to ask some questions about the testing sets.
In the folder 'testing sets', you shared 3 folders. In the folder A and folder B, there are 3 same scenes come from the Middlebury Stereo Datasets, I'd like to know the differences between folder A and folder B.
Futhermore, the depth maps I downloaded from the Middlebury Stereo Datasets contain many 0 value holes, may I ask the way to fill the holes?
Thanks a lot!