Q: Passage: Carol Willick (Anita Barone for character's debut episode, Jane Sibbett thereafter) and Susan Bunch (Jessica Hecht): Carol is Ross' lesbian ex-wife, who came out before the pilot, and Susan is her partner. Carol dumped and divorced Ross to be with Susan. In the second episode of the series, Carol tells Ross that she is pregnant with his child, and is having the baby with her partner Susan, though she wishes Ross to be part of the baby's life. Carol and Susan are often bemused by Ross' quirks throughout his onscreen appearances with them. Susan does not attempt to hide her contempt of Ross and vice versa, but they briefly put aside their differences when Carol gives birth to a boy, whom they all agree, after weeks of argument, to name Ben. Carol and Susan get married in "The One with the Lesbian Wedding" and make irregular appearances until "The One That Could Have Been" (Susan), and "The One with the Truth About London" (Carol). Though Ross and Carol are on good terms after their divorce, Ross continues to resent Susan for losing Carol to her.

Question: Based on this passage, who played carol in the first season of friends? Let's give stream of consciousness first:
The important part for answering this question is: Carol Willick (Anita Barone for character's debut episode, Jane Sibbett thereafter) and Susan Bunch (Jessica Hecht): Carol is Ross' lesbian ex-wife, who came out before the pilot, and Susan is her partner. Therefore, the final answer is Anita Barone for character 's debut episode , Jane Sibbett thereafter.