Routers A and B have an OC12c and a GE link between them and are running OSPF over both ofthese links. Which statement is correct, assuming the default JUNOS software OSPF metric calculation?（）

• A、There are two equal cost paths between a and b.
• B、The ge link is the preferred path between a and b.
• C、The oc12c link is the preferred path between a and b.
• D、Manual metric assignment must be configured to determine the outcome