In acts l and ll of The Tempest, prospero interacts with Ariel and caliban differently. Which statement best describes his interactions with the two ?

A. Prospero trusts caliban more than he trusts Ariel
B. Prospero guilts Ariel while he threatens caliban with physical pain
C. Prospero knows that Ariel is technically free, whereas he expects endless obedience from caliban
D. Prospero is friendly to caliban yet cruel to Ariel