How is Content Protection Parity implemented in Centera?

A.
Six blob fragments are striped across six nodes in a cube plus a parity fragment stored on a seventh node

B.
Six blob fragments are striped across six drives in a cube plus a parity fragment stored on a seventh node

C.
Five blob fragments are striped across five nodes in a cube plus a parity fragment stored on a separate node

D.
Five blob fragments are striped across five drives in a cube plus a parity fragment stored on a separate node