Which statements are true regarding default MTU?

Which statements are true regarding default MTU?

A.
Ethernet and POS are 1500 bytes.

B.
Ethernet, Serial and HSSI are 1500 bytes.

C.
HSSI, ATM and POS are 9100 bytes.

D.
HSSI, ATM and POS are 4470 Bytes.

E.
Ethernet and Serial are 1500 bytes.