The symbol for a flip flop has a small triangle - and no bubble - on its clock (CLK) input. The triangle indicates:

A) the FF is edge-triggered and can only change states when the clock goes 0 to 1.
B) the FF is level active and can only change states when the CLOCK = 1.
C) the FF is an active LOW device and can only change states when the CLOCK = 0.
D) the FF is edge-triggered and can only change states when the clock goes from 1 to 0.


A

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