$(4\mathrm{.}11$ Modified$)$

$($a$)$ Create a two$-$dimensional $32$ array of zeros and name it $A.$

$($b$)$ Create a two$-$dimensional $32$ array of ones and name it $B.$

$($c$)$ Create a $44$ diagonal array with diagonal elements of $-1,-2,-3$ and name it $C.$

$(4\mathrm{.}16)$ One common use for strings is to create meaningful file names or variable names. Create a $3x1$ string array called Dates containing the dates

June$\_10$

$Jul{y}_{12}$

$Au{g}_{15}$

Now use the $+$ operator to create a new string array to use as file names, filenames, for the data collected on those days, for example, "Data$\_$Collected$\_$June$\_10".$