Sammy, the Mayor of Friendlyville, Was Charged with Stealing $58,000

Sammy, the mayor of Friendlyville, was charged with stealing $58,000 from the Boys' and Girls' Club. He takes the stand in his own defense and claims it was the deputy mayor, John, who was the real mastermind behind the scheme. This is an outright lie. John takes the witness stand and testifies that not only did Sammy steal from the Boys' and Girls' Club, but he sold town secrets to the Russians! This, too, is an outright lie.

A) The defendant(s) who would be guilty of committing perjury would include: ​
B) Sammy, because he lied in court.
C) John, because he lied in court and no one in the town really ever trusted him.
D) both Sammy and John because they both had knowledge of the stealing and lied in court about it.
E) Sammy, because he lied to investigators.