The Best Argument Against Mandatory Audit Firm Rotation Is That

The best argument against mandatory audit firm rotation is that:

A) Audit fees will tend to increase when a highly qualified and experienced auditor is arbitrarily forced to stop serving an audit client
B) It will lead to undignified competition as unprincipled successor auditors reviewing a predecessor auditor's work will be publicly critical of the predecessor to bolster their own reputations
C) The "learning curve" efficiencies achieved by the first audit firm will be sacrificed when a new, inexperienced successor auditor is appointed
D) The ethical leadership provided by large CPA firms will be diluted by the market entrance of newer, more aggressive competitors