Plumber, a plumbing contractor, sued Drain, a homeowner. Plumber alleged that Drain refused to pay for extensive pipe repairs performed on Drain's home by Wilson, an employee of Plumber. Plumber called Wilson to the stand as a witness. Wilson, under oath, testified that he did not perform any work at Drain's home. Wilson also denied writing a letter to Lorca telling Lorca that Wilson was going to do plumbing work on Drain's house. Without releasing Wilson as a witness, Plumber offers in evidence the letter written by Wilson to Lorca. Which of the following is not a proper basis for admitting Wilson's letter?
A. Testimony by Wilson's wife that she recognizes Wilson's handwriting.
B. Lorca's testimony that the statements in the letter are responsive to a prior letter from Lorca to Wilson.
C. Comparison by the jury of the Wilson- Lorca letter with another letter that Wilson has admitted writing.
D. In-court comparison by Lorca, a nonexpert, of the Wilson-Lorca letter with another letter that Wilson has admitted writing. 
Choose A, B, C or D as your solution.
D