Recall the left-deep plan query optimizer from class. It is typically favored by optimizers. Write a left-deep plan for the following SQL query SELECT FROM R, S, T, U WHERE R.b = S.b AND S.b = T.b AND T.b = U.b (RS)b=b T) b=bU (Rb=bU)b=b T) b=bS All of the above (Rb=bS)TXU(Rb=bS)b=bT)b=bU Question 24 (2 points)