Which of the following are true? Check all that are true.

a class must have a special method defined using "def constructor$($self$)"$ if it's to be used to create objects of that class

a class is limited to having the same number of methods as it has attributes

the special keyword "self" is used as a name prefix when creating object attributes to identify them, but any variable could be used instead of "self"

setting up an $""$ method causes all attributes of class object $"$A$"$ to be displayed when the Python statement "print$(A)"$ is executed

setting up an str$\_"$ method causes only class object $"$A$"$ attributes selected by the programmer to be displayed when the Python statement "print$($A$)"$ is exed