Which of the Following Statements About Costs of Routing Protocols

Which of the following statements about costs of routing protocols is false?

A) Because different routing protocols have the same basis for calculating route costs, it is recommended to adopt automatic cost converting in route importing.
B) Because different routing protocols have different bases for calculating route costs, it is recommended to perform manual configuration for cost converting in route importing.
C) Costs of OSPF routes is generally based on bandwidth and therefore OSPF cost value ranges is wide.
D) Costs of RIP routes are generally based on hops and therefore the RIP cost value range is narrow.