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QUESTION 2 . 2 open 4 4 For the following data (blank spaces are nulls), what would be one of the valid primary keys for

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QUESTION 2 . 2 open 4 4 For the following data (blank spaces are nulls), what would be one of the valid primary keys for the table B 50 cat open 40 dog open 30 open open 10 fox a. A COW 20 5 5 Ob. B OCD O d.c

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