12310. Answering Amended Claims
(a) If a claim is amended before it has been answered, the respondent's original time to answer is extended by 20 days.
(b) If a claim is amended after it has been answered, but before a panel has been appointed, the respondent has 20 days from receipt of the amended claim to serve an amended answer.
(c) If a claim is amended after a panel has been appointed, the respondent has 20 days from the time the respondent receives notice that