Sentence Correction (SC) | Re: In the high-profile Senate race in North Carolina

In the high-profile Senate race in North Carolina, neither Senator Kay Hagan,who is the Democratic leader, or Thom Tillis, who is her Republican challenger and Speaker of the North Carolina House, have released recent campaign fundraising figures.

A. who is the Democratic leader, or Thom Tillis, who is her Republican challenger and Speaker of the North Carolina House, have
B. the Democratic leader, and Thom Tillis, her Republican challenger who is Speaker of the North Carolina House, have
C.