Which event is certain?
A) A bowl has 10 red marbles and 12 green marbles. You choose a red marble from the bowl.
B) A bag has pieces of paper numbered from 1 to 100. You choose a number less than 105.
C) A spinner has sections lettered A through H. The spinner lands on the 10th letter of the alphabet.
D) You roll two standard number cubes and the sum of the numbers rolled is 12.
