Refer to the exhibit.
A network engineer is tasked with setting up a GRE tunnel between the HQ and BRANCH offices. All devices need to be accessible between the sites. BRANCH-PC1 is unable to ping HQ-PC1. Which action resolves the issue?
A. Change the destination IP on HQ to 10.20.212.2
B. Change the source tunnel interface on BRANCH to G0/1.
C. Change the source tunnel interface on HQ to G0/0.
D. Change the destination IP on BRANCH to 10.20.212.1
