Which of the following correctly combines the two sentences?
I have so much homework.
I still have to learn this piece of music. (5 points)
I have so much homework, although I still have to learn this piece of music.
I have so much homework, and I still have to learn this piece of music.
I have so much homework so I still have to learn this piece of music.
I have so much homework yet I still have to learn this piece of music.