MrsO'Leary Hired Jenna to Sell Her House in Michigan

Mrs.O'Leary hired Jenna to sell her house in Michigan.She executed a power of attorney in favor of Jenna authorizing her to do "anything and everything associated with the sale of real estate,acting as a prudent person." On May 30,Jenna finalized a deal with Brandon for the purchase of the house.Brandon and Jenna signed the real estate contract that day.Jenna learned the next day that Mrs.O'Leary had died May 29.The contract is:

A) void since the agency terminated May 29.
B) valid since the agency's purpose was achieved before Jenna was notified of Mrs. O'Leary's death.
C) voidable at the option of Mrs. O'Leary's estate.
D) voidable at the option of Brandon.