Which of the revisions uses subordination to revise the following sentence?
It took me a while to get used to the new software, but now I like it.
A.
I like the new software, but it took me a while to get used to it.
B.
It took me a while to get used to the new software; now I like it.
C.
It took me a while to get used to the new software. I like it now.
D.
Although it took me a while to get used to the new software, now I like it.