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Question $8$

Which of the following are true about class methods? Check all that are true.

a class must always have a method called $\text{'}$ init$\_"$

a method called "getDay" is defined by the statement "def getDay $($self$)$:$"$

a class must always have a method called $\text{'}$ init$\_"$ if it is to be used to create objects of the class's type

a method may only use attributes that belong to the object in which it's defined

a method uses attributes that belong to the object in which it's defined by using a common prefix such as "self" $-$ for example, "self.day" to read or update object attribute "day"

a class must have a method called $\text{'}$ str$\_-"$