Consider the following code $($on the left$).$ After this code is executed, which of the following statements

$($on the right$)$ are True? Check all that apply.

x $=10$

y $=100$

z $=[$x$,$ y$]$

x $=$ y

$($a$)$ x and y refer to the same object in memory

$($b$)$ x and z$[0]$ refer to the same object in memory

$($c$)$ x and z$[1]$ refer to the same object in memory

$($d$)$ y and z$[1]$ refer to the same object in memory

$($e$)$ none of the above