Where are MPLS point-to-multipoint traffic engineering packets replicated?

A.
head-end router

B.
branch-point router

C.
midpoint router

D.
leaf-point router

E.
tail-end router

Explanation:
ReferencE. http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_te_p2mp.pdf
1.7. MPLS Traffic Engineering