Which of these martial arts is the most popular in Japan amongst women in their 20's and 30's?

Question:

Brazilian Jiu-Jitsu
Judo
Karate (Goju-ryu or Shotokan)

Answer:

Women in that age group seldom do any kind of martial art.
I know for a fact that very few females of any age do Brazilian Jiu-Jitsu in Japan. There are only a handful of gyms devoted to it.
Although female judo players have seen some recent media attention karate is more popular.

1. Karate
2. Judo
3. Brazilian Jiu-Jitsu