Rotating entire PDFs for free

[gusp]

Hi, thanks for reading. I'm looking for a free application that allows me to either

A) Rotate all pages of a PDF 90° and do a slideshow, showing only one page at a time, fitting the page to the screen

or

B) Rotate all pages of a PDF 90° and save the PDF so I can view it in Apple’s Preview, like Proview PDF Editor does (not free)

 

[mulo]

Preview.app

 

[gusp]

Preview.app

How do you rotate more than one page?

EDIT: I see, you have to change the sidebar to thumbnail view first, to select more than one page.