Introduction to SQL
What does the following query find?(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'red')MINUS(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'green')

None of These
Find the sailor IDs of all sailors who have reserved red boats but not green boats
Find the sailor Ids of atmost one sailor who have reserved red boats but not green boats
Find the sailor IDs of at least one sailor who have reserved red boats but not green boats

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