Question $45$

Which three $(3)$ statements about Python variables are true? $($Select $3)$

$1$ point

Variables do not have to be declared in advance of their use

Variables can change type after they have been set

Variables must be declared at the top of the program

Variable names are not case sensitive$,$ i$.$e$.$ the variable "TotalSales" and "totalsales" would refer to the same block of memory

A variable name must start with a letter or the underscore $"\_"$ character