No need to guess! You&#x27;re right, A and C are closest - (A-C) shows fewer differences than (B-C). Here are the diffs for the images (with C-C as a sanity check):<p><a href="http:&#x2F;&#x2F;i.imgur.com&#x2F;GQGLE61.jpg" rel="nofollow">http:&#x2F;&#x2F;i.imgur.com&#x2F;GQGLE61.jpg</a><p>As other commenters have said, C is just the highlight-free version of A, which the diffs fairly clearly show.<p>EDIT: For reference, here&#x27;s A-B.<p><a href="http:&#x2F;&#x2F;i.imgur.com&#x2F;DW8TL7A.jpg" rel="nofollow">http:&#x2F;&#x2F;i.imgur.com&#x2F;DW8TL7A.jpg</a>