Part: A
From personal experience, here at the things I have learned about my walk with Christ.
1) I do not believe all people are born with a natural inclination to struggle with homosexuality. However, I do feel there are some people who have a biological predisposition to it.
2) Whether or not someone is "born that way" does not matter. The behavior is a choice,lust is a choice. The same way that heterosexuals can choose to not lust or act out sexually---people with SSA (same sex attraction) can choose to not act. So while they could argue that the attraction is not a choice, acting on that attraction still is a choice
3) You will likely receive the argument: Why would God "make me this way" if it was wrong?
Answer: We live in a fallen world. That said, God has not given us any struggle that we cannot overcome. In fact, our struggles can bring us closer to God. (Personally, I find that this struggle forces me to rely on God more and acknowledge my need for him.)
4) You may receive the argument: Well why would God not want me to be happy? This makes me happy.
Answer: God's ways are not our ways, nor are His thoughts our thoughts. I can't think of a verse that promises this life will be without struggles. We don't struggle against the powers of this world, but of the spiritual nature.