Refer to the exhibit.

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

A.
tunnel mode mismatch

B.
IPsec phase-1 configuration is missing peer address on R2

C.
IPsec phase-1 policy mismatch

D.
IPsec phase-2 policy mismatch

E.
incorrect tunnel source interface on R1