Assignment Instructions: Compute their Cartesian product, AxB of two lists. Each

Assignment Instructions:
Compute their Cartesian product, AxB of two lists. Each list has no more than 10 numbers.
For example, if the user supplies the two input lists:
A = [1,2]
B = [3,4]
then the Cartesian product output should be:
AxB = [(1,3),(1,4),(2,3),(2,4)]