A logical operator always evaluates to NULL when one or both operands are NULL. True False Question 8 ( 2 points) Which of these are true about NULL values? Select all that apply. A NULL value is the same as a zero value but different from an empty string. A NULL value is the same as a zero value or an empty string. A NULL value is different from a zero value or an empty string. One NULL is never equal to another. Two NULL values are equal in some situations