What did the TAC engineer configure incorrectly?

Refer to the exhibit.

A new TAC engineer came to you for advice. A GRE over IPsec tunnel was configured, but the
tunnel is not coming up.
What did the TAC engineer configure incorrectly?

A.
The crypto map is not configured correctly.

B.
The crypto ACL is not configured correctly.

C.
The crypto map is not applied to the correct interface.

D.
The OSPF network is not configured correctly.