A horse breeder offered to sell a colt to his neighbor and they agreed on a purchase price. The horse breeder subsequently received a letter from the neighbor thanking him for the sale and summarizing their agreement. The letter contained the neighbor's alleged signature. When the horse breeder attempted to set up transfer of the colt, the neighbor denied that she agreed to purchase it. In a breach of contract action against the neighbor, the horse breeder offers into evidence the letter. The horse breeder testifies that he is familiar with the neighbor's handwriting and recognizes the signature on the letter as being hers.Assuming appropriate objection by the neighbor, who claims that she did not sign the letter, how should the trial court rule on the admissibility of the letter?
A) Exclude the letter for lack of foundation because lay opinion testimony regarding handwriting identification is not admissible.
B) Exclude the letter unless its authenticity is established by a preponderance of the evidence.
C) Admit the letter as authentic and instruct the jury accordingly.
D) Admit the letter but instruct the jury that it is up to them to decide whether the letter is authentic.