What is the maximum AU size in an ASM disk group?

What is the default AU size of an ASM disk group? What is the maximum AU size in an ASM disk group?

A.
100KB default, 10TB maximum

B.
256KB default, 1024MB maximum

C.
10MB default, 126PB maximum

D.
64KB default, 1EB maximum

E.
1MB default, 64MB maximum