Refer to the exhibit.

Which option is the reason for the failure of the DMVPN session between R1 and R2?

A.
incorrect tunnel source interface on R1

B.
IPsec phase-1 policy mismatch

C.
tunnel mode mismatch

D.
IPsec phase-2 policy mismatch

E.
IPsec phase-1 configuration missing peer address on R2