To find the youngest player, go to the row that has a 1 in the middle (stem); then, look for the leaf that has the lowest value, as shown below
Therefore, the youngest player is 18 years and plays for team A.
Similarly, in the case of the oldest player, look for the row with a 4 in the middle,
Thus, the oldest player is 41 years and plays for team A.
The answer is option D, the youngest and oldest players are on team A.