What was Carl Gustav Jung’s blood type?

As I was searching for a better video to accompany the post above, I came across this video:

The highest, most decisive experience is to be alone with one’s own self. You must be alone to find out what supports you, when you find that you can not support yourself. Only this experience can give you an indestructible foundation. It is my mind, with its store of images, that gives the world color and sound; and that supremely real and rational certainty which I can “experience” is, in its most simple form, an exceedingly complicated structure of mental images. Thus there is, in a certain sense, nothing that is directly experienced except the mind itself. Everything is mediated through the mind, translated, filtered, allegorized, twisted, even falsified by it. We are enveloped in a cloud of changing and endlessly shifting images. – Carl Jung

I wonder what his blood type was.