C-01-Q049mediumsingle_mcqThe Cartesian product A×BA \times BA×B is:a{(x,y):x∈A\{(x, y) : x \in A{(x,y):x∈A and y∈B}y \in B\}y∈B}b{(x,y):x∈B\{(x, y) : x \in B{(x,y):x∈B and y∈A}y \in A\}y∈A}cA∩BA \cap BA∩BdA∪BA \cup BA∪B