Consider the matrix

M $=$

$1521$

$8723$

$5860$

$.$

$($a$)$ What is the outcome of the following code?

for column in M$[2]$:

print$($column$)$

Enter the values in the order that they would be output, separated by commas.

$($b$)$ Look at the code below. In what order are the entries of the matrix added? $($Enter the numbers corresponding to the matrix entries, in the correct order and separated by commas, in the answer field below.$)$

s$=0$

for i in range$(0,$len$($M$))$:

for j in range$(0,$len$($M$[0]))$:

s$+=$M$[$i$][$j$]$

print$($s$)$