This French Defense played at the Internet Chess Club was essayed by WIM Wimca. Maybe the CA stands for California. She played 6. a3 and went on to lose the game after her pawn center was dissolved. In the advance French, white invests a lot of tempi constructing a fixed pawn center.
A weak player like me really has no say, but it seems like a passive way for white to play. Black’s standard reaction, according to Larry White, is to play f6 attacking the head of White’s pawn chain at e5. Wimca played exf6 which allows the Black Knight to get out to the excellent f6 square and also create a half-open f-file for the second player.
Larry White quit playing chess and opted for a future in the field of nuclear physics. He was the best class player I ever met. A little full of himself, but a good chess teacher.