Which of the following is true with respect to the LC$-3$ Control Unit?

The Instruction Pointer is an input to the FSM and a $2-$bit control signal is an output of the FSM$.$

The ALU is an input to the FSM and a $2-$bit control signal is an output of the FSM$.$

A $2-$bit control signal is an input to the FSM and the Instruction Pointer is an output of the FSM$.$

The Instruction Register is an input to the FSM and a $2-$bit control signal is an output of the FSM$.$