Which of the following, if any, are invalid names for a variable?

1.	Which of the following, if any, are invalid names for a variable?
A.	bankAccountNumber
B.	first_Name
C.	doubleNumber
D.	operator
E.	All of the above are valid names for variables
Answer» E. All of the above are valid names for variables

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Which of the following, if any, are invalid names for a variable?

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