What camera resolutions does BQ Aquaris X2 feature?

Here are details about the BQ Aquaris X2's camera sensors:
Rear Camera : 12 megapixel
Front Camera : 8 megapixel
Camera Options : 12 MP, f/1.8, 1/2.8", 1.29µm, dual pixel PDAF
5 MP, f/2.4, (depth)