What is the significance of the J and K terminals on the J-K flip-flop?

• A. there is no known significance in their designations
• B. the j represents “jump,” which is how the q output reacts whenever the clock goes high and the j input is also high
• C. the letters were chosen in honour of jack kilby, the inventory of the integrated circuit
• D. all of the other letters of the alphabet are already in use