Lay Witness John Is About to Testify That He Recognized

Lay witness John is about to testify that he recognized the handwriting as that of the defendant's. Which of the following statements is true?

A) John's testimony on this issue would be inadmissible unless John was a certified handwriting expert.
B) John's testimony would be admissible under common law but not under the Federal Rules of Evidence.
C) John's testimony on this subject matter is considered identity evidence.
D) John's testimony would be admissible under the Federal Rules of Evidence provided the testimony met the two requirements laid out in Federal Rule 701.