Basketball Team A Basketball Team at a University Is Composed of Ten

Basketball Team
A basketball team at a university is composed of ten players.The team is made up of players who play either guard,forward,or center position.Four of the ten are guards; four of the ten are forwards; and two of the ten are centers.The numbers of the players are 1,2,3,4,for the guards; 5,6,7,8 for the forwards; and 9 and 10 for the centers.The starting five are numbered 1,3,5,7,and 9.Let a player be selected at random from the ten.Define the following events:
A = player selected has a number from 1 to 8.
B = player selected is a guard.
C = player selected is a forward.
D = player selected is a starter.
E = player selected is a center.
-P(B) is equal to:

A) 0.80.
B) 0.40.
C) 0.50.
D) 0.20.
E) 0.30.