Consider a collection of 9 bears. There is a family of red bears consisting of one father bear, one mother bear, and one baby bear. There is a similar green bear family, and a similar blue bear family. We draw 5 consecutive times from this collection without replacement (i. e., not returning the bear after each draw). We keep track (in order) of the kind of bears that we get. 10a. Let Aj denote the event that exactly j of the red bears are chosen during the 5 draws. Do the events A0, A1, A2, A3 constitute a partition of the sample space? (As always, be sure to justify your answer.)