b$)$ Type this matrix in Matlab Command Window and use Matlab to answer the following questions:

a$.$ Distinguish $42$ array a consisting of all elements in the second through three columns of $x.$

$(2$ marks$)$

b$.$ Distinguish $25$ array b consisting of all elements in the third through fourth rows of $x.$

$(2$ marks$)$

c$.$ Distinguish $23$ array $c$ consisting of all elements in the second through third rows and second through fourth columns of $x.$

$(2$ marks$)$