pie chart

This pie chart is Japanese blood type.
But, there are defference by region.
In the south there are more type A .
Tohoku and Hokkaido Hokuriku Region has many type B and type O.
There are many type B in Akita in Japan.
Many type O in Hokkaido in Japan.
Sorry, I don't know type A and AB.
My blood type is A.
The most common type.
Which type are you?