There's some quality loss in #2 - a smudge on the girl's back, but this could just be jpeg loss. There is so much detail in #2 - debis on the water, foliage meeting the water's edge etc that it seems too much work to fake.
#3 just looks bizarre, so I vote for #2. But probably this is too obvious - is this an honest quiz Denyse or are you trying to trick us?