Create following two matrices A and B with following elements.

A$=$

$12$

$01$

B$=$

$-31$

$2-1$

Write R commands to do the following tasks:

$($i$)$ Multiply the two matrices.

$($ii$)$ Combine the two matrices row$-$wise.

$($iii$)$ Create a function that computes the following expression:

A$2+3*$B