The two label distribution protocols that provide support for MPLS traffic engineering are:

The two label distribution protocols that provide support for MPLS traffic engineering are:

A.
RSVP and OSPF

B.
CR-LDP and IBGP

C.
RSVP and CR-LDP

D.
LPS and LDS

Explanation:
http://www.mplsrc.com/faq2.shtml