A conveys Greenacre to B on April 1. B does not then record his deed. On April 5, A sells Greenacre to C, delivering a deed to Greenacre in exchange for C's payment of the purchase price. When C pays the purchase price, he knows that A conveyed Greenacre to B four days earlier. On April 6, C records his deed. On April 7, B records his deed.

(a) Who owns Greenacre under (1) a race statute, (2) a notice statute, or (3) a race-notice statute?

(b) Does it make a difference if the A-to-B transaction is a sale or a gift? (The term conveys does not tell us whether B paid anything)