Consider the following snippet of Python Code.

$$class BankAccount: $\_$

nextNbr $=1000$

def $\_\_$init$\_\_($self$,$ initialBalance $=0)$:

self.$\_\_$balance $=$ initialBalance

self.$\_\_$acctNbr $=$ BankAccount.$\_$nextNbr

BankAccount.$\_$nextNbr$=$BankAccount.$\_$nextNbr $+1$

Which of the following is$/$are true? Select all that apply.

nextNbr is a class variable. All members of the class have this variable and its value

balance and acctNbr are instance variables. Each object in the class has its own value of balance.

The parameter self refers to the object being created.

Both acctNbr and balance are preceded by a double underscore. That means they are private member variables.

All of the statements are true except B$.$