Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 5; B: the numbers add to 5; C: at least one of the numbers is 1; and D: the numbers do not add to 8. Express the given event in symbolic form. Either the numbers add to 5, or they add to 8, or at least one of them is 1. OBO D'UC OBUD' UC B' U D'UC OBUD' UC BUD' nc How many elements does it contain