In which cases would you probably want to use the JPG file format versus the PNG format for a web image?
a. The image is a simple vector graphics image with a low number of color shades.
b. The image is a hand-drawn graphic with a high level of detail and a large number of color shades.
c. The image is a photo taken with your smartphone.
d. The image is an irregularly shaped logo which requires a transparent background.