Which of the following statements is most true?

The following system involves a combinational circuit: A button activates a home security system if the system is currently off. The same button deactivates a home alarm system if the system is currently on$.$

A combinational circuit's output value is based solely on the present input values.

A combinational circuit's output value is based on the present input values, as well as the sequence of past input values.

A combinational circuit can be represented by a Boolean function, but cannot be represented by a circuit.