Given OSPF AS external, RIP, EBGP, and IBGP learned routes to the same destination, which route is preferred?

Given OSPF AS external, RIP, EBGP, and IBGP learned routes to the same destination, which route is preferred?

A.
the EBGP route

B.
the RIP route

C.
the IBGP route

D.
the OSPF AS external route