Which statement BEST describes the basic concepts of a clue/green deployment?

Which statement BEST describes the basic concepts of a clue/green deployment?
A . A deployment is made where a set of features are hidden from users until tested and confirmed successful
B. A deployment is made to a pilotuser group for feedback and confirmation before it is made production viable
C. A deployment is made to an identical but passive production environment where no users will be affected if it goes wrong
D. A deployment is made to the testing environment for validation and confirmation before it is finally released to users

Answer: C