Problems $4$ through $6$ refer to Figure $9\mathrm{.}21,$ which shows two alternative versions of a ladder diagram with two inputs $($In $1$ and In $2),$ two outputs $($Out $1$ and Out $2),$ and an on$-$delay timer.

$4.$ Decide whether each of these statements is true $(T)$ or false $(F).$ When there is just an input to In $1$ in Figure $9\mathrm{.}21$:

$($i$)$ The timer starts.

$($ii$)$ There is an output from Out $2.$

A$.($i$)T($ii$)T$

B$.($i$)T($ii$)F$

C$.($i$)F($ii$)T$

D$.($i$)F($ii$)F$

$5.$ Decide whether each of these statements is true $(T)$ or false $(F).$ When there is just an input to In $2$ in Figure $9\mathrm{.}21$:

$($i$)$ The timer starts.

$($ii$)$ There is an output from Out $2.$

A$.($i$)T($ii$)T$

B$.($i$)T($ii$)F$

C$.($i$)F($ii$)T$

D$.($i$)F($ii$)F$

$6.$ Decide whether each of these statements is true $(T)$ or false $(F).$ When there is an input to In $1$ and no input to In $2$ in Figure $9\mathrm{.}21,$ there is an output from Out $2$ that:

$($i$)$ Starts immediately.

$($ii$)$ Ceases after the timer preset time.

A$.($i$)T($ii$)T$

B$.($i$)T($ii$)F$

C$.($i$)F($ii$)T$

D$.($i$)F($ii$)F$