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GROUPING #3 At a given organization, the EdvisitFact table has 750 rows of data. Exactly 250 of those rows store a NULL value in a

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GROUPING #3 At a given organization, the EdvisitFact table has 750 rows of data. Exactly 250 of those rows store a NULL value in a column named Observation Started instant. What value would a query of "SELECT COUNT Observation Startedinstant) FROM EdVisitFact' return? SELECT ONE OF THE FOLLOWING (2 PTS) A. O B. 250 C. 500 D. 250

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