What is function of the RP/0/RSP0/CPU0:PE1(config-ospf)#distance Cisco IOS-XR command?

What is function of the RP/0/RSP0/CPU0:PE1(config-ospf)#distance Cisco IOS-XR command?

A.
To modify the administrative distance of the OSPF routes

B.
To modify the default seed metric of the OSPF external routes

C.
To modify the OSPF default reference bandwidth

D.
To modify the OSPF cost

Explanation:
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/routing/command/reference/rr38ospf.pdf