In his will, Vic named his son, Don, as the executor. Which of the following is a power or duty of Don as executor?

A$.$ Don must post a surety bond even if a provision in the will exempts him.

$B.$ Don has a duty to discover, collect, and distribute all the decedent's assets.

C$.$ If the will is silent on the point, Don has complete discretion insofar as investing the estate's assets.

D$.$ Don can sell real property without a court order, even though he has not been expressly authorized to do so$.$