When Conducting Rapid Syllable Transition Treatment (ReST), McCabe and Ballard

When conducting Rapid Syllable Transition Treatment (ReST) , McCabe and Ballard (2015) recommend that clinicians use:

A) multisyllabic pseudo-words (nonwords) to ensure that children imitate clinicians' motor plans rather than use their own established motor plans for real words.
B) multisyllabic real words so that children can focus on refining motor plans and programs for known phonological plans, rather than having to create new representations for nonwords.
C) multisyllabic pseudo-words to avoid the interference of ingrained errors from real words.
D) multisyllabic real words to reduce the demands on children's processing capacities.