Which three statements are true about the IP fragment offset?

Which three statements are true about the IP fragment offset? (Choose three.)

A.
A fragment offset of 0 indicates that it is the first in a series of fragments.

B.
A fragment offset helps determine the position of the fragment within the reassembled datagram.

C.
A fragment offset number refers to the number of fragments.

D.
A fragment offset is measured in 8-byte units.

E.
A fragment offset is measured in 16-byte units.