B. Consider the following two relations: Relation r Relations 10 15 25 a b a R 5 8 6 B. b c A 10 25 10 c 6 3 5 show the results of the following relational algebraic operations. Give 0 as your answer if you think the operation makes no sense. However, if you believe an operation makes sense but no tuples should be returned, you should still draw the schema of the resulting table. j. Ip,b(Or