What are the characteristics of the environment in which beach volleyball is played?

The sand absorbs part of the forces put into action by the participants, which considerably reduces the effectiveness of movements such as walking, running, and jumping.
The sun can dazzle the players and cause sudden changes in brightness, so the use of sunglasses and hats is essential.
The wind is always present in beach volleyball and is a determining factor in the game's development.
a) Only I is true.
b) Only II is true.
c) Only III is true.
d) I and II are true.
e) I, II and III are true.