A. Any fiduciary who participates in a breach committed by a cofiduciary, or who tries to conceal a cofiduciary's breach, shall be held liable jointly for breach of fiduciary duty. Cofiduciary liability also results from a fiduciary's failure to use reasonable care to prevent a cofiduciary from committing a breach.
B. Any fiduciary who has knowledge of a cofiduciary's breach has a duty to remedy the breach.