C-02-Q085mediumsingle_mcqA×B=?A \times B = ?A×B=?a{(a,b):a∈A,b∈B}\{(a, b) : a \in A, b \in B\}{(a,b):a∈A,b∈B}b{a+b:a∈A,b∈B}\{a + b : a \in A, b \in B\}{a+b:a∈A,b∈B}c{a⋅b:a∈A,b∈B}\{a \cdot b : a \in A, b \in B\}{a⋅b:a∈A,b∈B}dA∪BA \cup BA∪B