In order to check the CLR function of a counter, ________.

• apply the active level to the CLR input and check all of the Q outputs to see if they are all in their reset state
• ground the CLR input and check to be sure that all of the Q outputs are LOW
• connect the CLR input to Vcc and check to see if all of the Q outputs are HIGH
• connect the CLR to its correct active level while clocking the counter; check to make sure that all of the Q outputs are toggling