a) Which one of the following queries finds sailors who have reserved at least a boat but not a red boat? Query1: SELECT R.sid FROM Boats B, Reserves R WHERE B.bid=R.bid AND B.color<>’red’ Query2: SELECT R.sid FROM Reserves R EXCEPT SELECT R.sid FROM Boats B, Reserves R WHERE B.bid=R.bid AND B.color=’red’   b) What are the results of query1 and query2 in part A, considering the following instances of Sailors and Reserves tables? (images attached)

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