Mr. Arboreta wants to plant fruit trees in a rectangular array. For each of the following numbers of trees, find all possible numbers of rows if each row is to have the same number of trees. a. The possible numbers of rows for 196 trees are ___

b. The possible numbers of rows for 20 trees are ___

c. The possible numbers of rows for 17 trees are ___

d. The possible numbers of rows for 144 trees are ___