2-which of the following is true about copyright?
a. if an image is already on one web page, it's okay to use it on any web page.
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b. if you make a lot of changes to an image, you do not need the permission of the original
creator to post it on your site.
c. image creators can decide both who can use their images and how the images can be used
d. if there is no copyright information for an image, anyone is free to use it on their own sites.
e. you must always contact the creator for permission to use an image on your site.