$99$ ll$.$

$$:$$

$$

$$

$40$

$$

P $$

What does the instruction mov ax$,0$x$4$c$00?$achieve in the following code

mov ax$,0$x$4$c$00$

int $0$x$21$

It initializes the AX register $.$a

It terminates the program $.$b

It adds two numbers $.$c

It moves data into the DS register $.$d