Abox contains 3 blue cards numbered 1 through 3, and 4 green cards numbered 1 through 4. list the sample space of picking a blue card followed by a green card.
a. {11,12,13,14}
b. {(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3), (4, 1), (4, 2), (4, 3)}
c. {12}
d. {(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4), (3, 1), (3, 2), (3, 3), (3, 4)}