The Rarest of Permitted Actions of a Real Estate Broker

The rarest of permitted actions of a real estate broker is to:

A) actively seek out purchasers and advertise the property at the agent's own expense.
B) inspect the property and value it for the purposes of establishing an offering price.
C) act as agent for both vendor and purchaser.
D) execute the purchase agreement on behalf of the vendor under a power of attorney.
E) prepare a written offer to purchase for the prospective purchasers to sign.