When an ML-series RPR ring is provisioned over a SONET BLSR (or SDH MS-SPR) ring, the ML architecture can no longer utilize the full available bandwidth on the SONET/SDH ring due to the constraints of BLSR. Which features are being introduced to allow use of discontiguous timeslots and BLSR protect channels when provisioning ML-series RPR rings, in order to alleviate this limitation?

A.
Software Link Capacity Adjustment Scheme (SW-LCAS)

B.
Low Order Virtual Concatenation (LO-VCAT)

C.
Framed Generic Framing Procedure (GFP-F)

D.
High Order Virtual Concatenation (HO-VCAT)

E.
Bridge Control Protocol (BCP)