Question: SQL uses a three-part logic that knows unknown in addition to true and false.Which of the following prints has the result unknown? a. NOT((NULL>0) AND

SQL uses a three-part logic that knows "unknown" in addition to "true" and "false".Which of the following prints has the result "unknown"?

a. NOT((NULL>0) AND (1>0)))

b. (NULL>0)OR(1>0)

c.(NULL>0) AND (1<0)

d. NOT((NULL>0) OR (1>0))

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