How does the export route map affect the VRF export process?

How does the export route map affect the VRF export process?

A.
A route map can be specified for each VRF to filter routers exported from a CE-router to a PE-router.

B.
A route map can be specified for each VRF to filter routes exported from one PE-router to another PE-router.

C.
A route map can be specified for each VRF to attach additional route targets to routes exported from a PE-router to a CE-router.

D.
A route map can be specified for each VRF to attach additional route targets to routes exported from one PE-router to another PE-router.