A plaintiff sues the defendant for breach of a promise made in a letter allegedly written by the defendant to the plaintiff.  The defendant denies writing the letter. 

Which of the following would NOT be a sufficient basis for admitting the letter into evidence?

选项：

A:

Comparison by the trier of fact of the letter with an admitted signature of the defendant.

B:

Evidence that the letter was written in response to one written by the plaintiff to the defendant.

C:

Opinion testimony of a non-expert witness based upon familiarity acquired to authenticate the signature.

D:

Testimony by the plaintiff that she is familiar with the defendant's signature and recognizes it on the letter.