Which of the following statements are false about query optimization? (a) We convert the SQL query we have to a logical plan. Then we optimize the logical plan, and lastly we find the corresponding cheapest physical plan. (b) We come up with a logical plan, then we find the corresponding best physical plan, and lastly we convert it to a SQL query. (c) We convert the SQL query we have to a physical plan, and then we find the corresponding optimized logical plan for it. Select all possible options that apply