Question $9(1$ point$)$

Which of the following assignment statements create a Python variable? Click all that apply.

$m{y}_{v}ar=34$

$m{y}_{v}ar=ol{d}_{v}ar+5$

# assume that old$\_$var contains $[$a reference to$]4$

$m{y}_{v}ar=m{y}_{-}$var $+3$

my$\_$var