What camera resolutions does Sony Xperia XZ2 feature?

Here are details about the Sony Xperia XZ2's camera sensors:
Rear Camera : 19 megapixel
Front Camera : 5 megapixel
Camera Options : 19 MP, f/2.0, 25mm (wide), 1/2.3", 1.22µm, predictive PDAF, Laser AF