A gentleman owned Greenacre in fee simple of record on January 10. On that day, a bank loaned the gentleman $50,000 and the gentleman mortgaged Greenacre to the bank as security for the loan. The mortgage was recorded on January 18. The gentleman conveyed Greenacre to a buyer for a valuable consideration on January 11. The bank did not know of this, nor did the buyer know of the mortgage to the bank, until both discovered the facts on January 23, the day on which the buyer recorded the gentleman's deed. The recording act of the jurisdiction provides: "No unrecorded conveyance or mortgage of real property shall be good against subsequent purchasers for value without notice, who shall first record." There is no provision for a grace period, and there is no other relevant statutory provision. The bank sued the buyer to establish that its mortgage was good against Greenacre. The court should decide for A: the buyer, because he paid valuable consideration without notice before the bank recorded its mortgage. B: the buyer, because the bank's delay in recording means that it is estopped from asserting its priority in time. C: the bank, because the buyer did not record