(a) The transaction was consented to by all interested persons affected thereby; or
(b) The will expressly authorizes the transaction by the personal representative; or
(c) The transaction was made in compliance with another statute or with a contract or other instrument executed by the decedent.
(2) The title of a purchaser for value without notice of the circumstances of the transaction with the personal representative is not affected unless the purchaser should have known of the defect in the title of the seller. [1969 c.591 §132]