Which of these can be used to launch the Guided Selling process?

Which of these can be used to launch the Guided Selling process?

Note: This question displayed answer options in random order when taking this Test.
A . Create a Vlocity action to trigger the process
B . Add a field on the Order for vlcCart
C . Set up vlcCart to link to the regular Vlocity Cart
D . Alter the Vlocity Cart by developing in JSON

Answer: D