The table R(x,y) currently has the following tuples (note there are duplicates): (1,2), (1,2), (2,3), (3,4), (3,4), (4,1), (4,1), (4,1), (4,2). Compute the result of the query: SELECT R1.x, R2.y, COUNT(*) FROM R R1, RR2 WHERE R1.y = R2.x GROUP BY R1.x, R2.y; Which of the following tuples is in the result? O a. (3, 4, 6) O b. (3, 2, 6) O c. (3, 2, 2) O d. (4, 3, 2)

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