Question $2$

Which of the following describes the operation of a positive edge$-$triggered $D$ flip$-$flop?

$1$ point

A$.$ The output will follow the input on the leading edge of the clock

B$.$ If both inputs are HIGH, the output will toggle.

C$.$ When both inputs are LOW, an invalid state exists.

D$.$ The input is toggled into the flip$-$flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock.