How do I export multiple different sized artboards to PDF in Adobe Illustrator?

I have a file with multiple artboards of varying sizes.

When I print to PDF, I usually get just the size of the first artboard, the rest are either cropped or have a white border around them.

Any solution to getting all the artboards to PDF at the correct size?

How can I print all of my differently sized artboards to a PDF, with each of them keeping their originally specified artboard size?