If the bait and prey proteins _______ they bring the DNA-binding and trans-activation domains in such close proximity that they reconstitute the function of the transcription activator, turning ____ the expression of a reporter gene as a result. Which of the following is not the correct pair of blanks?

• A. physically interact, on
• B. do not interact, on
• C. do not interact, off
• D. stop interacting, off