Which two among the following are used to indicate external type of route in routing table?

Which two among the following are used to indicate external type of route in routing table?
(Choose two.)

A.
D EX

B.
IA

C.
O E2

D.
R E2

E.
i L2

Explanation:
http://www.xpresslearn.com/cisco/routing/route-table-explanation