Which of the following is illegal during a serve?
a. Stepping over the service line
b. Tossing the ball too high before hitting it
c. Hitting the ball before it bounces on the ground
d. All of the above
d. All of the above
b. Tossing the ball too high before hitting it
c. Hitting the ball before it bounces on the ground
d. All of the above
d. All of the above