Many documents are signed and exchanged when property is conveyed from one person to an $ ther, and several of them are filed with the county in which the property is located. The purpose of recording the documents is to

$($a$)$ ensure the validity of the documents.

$($b$)$ give constructive notice to the public.

$($c$)$ make the documents legal and binding.

$($d$)$ provide proof that money exchanged hands.