Indicate which of the following statements are true $($check all that apply$).$

A$.$ JPGs work well with gradients or blends of colour, as well as with soft shadow effects.

B$.$ JPGs and GIFs support dithering, but PNGs do not.

C$.$ JPGs tend to get pixelated around areas of sharp contrast between colours.

D$.$ JPGs use a lossy compression meaning that quality is lost upon saving the image.