In practice, there are so many different branches, varieties, manifestations, and subgroups of Christianity that it’s practically impossible to say anything about Christianity as a whole (at least without no-true-Scotsmanning out large exclusions).
Which is why I haven’t voted in the poll: I’d want to vote for both #1 and #3.
To take just one example: There’s a current thread on “Why did we free the slaves?” And one of the responses in that thread is:
And I think that’s largely correct: much of the impetus for abolition (and, much later, the Civil Rights Movement) came from Christianity, and from Christians acting on their Christianity.
But much of the defense of slavery (and inequality, and segregation) also came from Christianity.