OK, it looks like people who would tend to agree with both statements are reluctant to admit it in the poll. Out of 28 votes, option C only got 3. B&W's post and some of the ones that follow may have scared them away, because they might worry it may be a trap.
And it was a trap. Anyone who answered C is at best logically inconsistent, and may quite likely be a hypocrite.
The main objection offered for opposing the civil marriage of same-sex couples is the claim that "redefining" a well established term to serve a political agenda is simply wrong.
And yet, in making the statement "homosexuality is a sin" they not only do just that very thing, but they deliberately blur the distinction between the traditional definition and their new definition in order to condemn people who are homosexual under the traditional definition, but who are not committing "homosexual sins" under their new definition, nor committing "sodomy" under the old definition of these sins.