He is a great singer not to mention his amazing dancing skills but I wouldn't call him a talented actor.

Which of the following is a correction for the punctuation in this sentence?

A) He is a great singer (not to mention his amazing dancing skills), but I wouldn't call him a talented actor.
B) He is a great singer. Not to mention his amazing dancing skills. But I wouldn't call him a talented actor.
C) He is a great singer, not. To mention his amazing dancing skills, but I wouldn't call him a talented actor.
D) He is a great singer (not to mention) his amazing dancing skills, but I wouldn't call him a talented actor.