Cal. PROB § 19252

The trustee shall have the power to pay any claim or portion of a claim and payment shall constitute allowance of the claim to the extent of the payment. The trustee shall have the power to compromise any claim or portion of a claim. If the trustee or the attorney for the trustee is a creditor of the deceased settlor, the trustee shall have the same powers regarding allowance, rejection, payment, or compromise set forth in this chapter.