A seller knows that the roof leaks, but so far no visible damage has occurred. The seller has a real estate broker who is a single agent for the seller, and the broker also knows about the leak. If a potential buyer looks around the house and asks nothing about the roof, the broker's legal obligation regarding this matter is satisfied if she says

A$.$ nothing about the roof's condition.

B$.$ the roof appears to be in good condition.

C$.$ that there is no sign of water damage.

D$.$ that there is a leak now in the roof.