Which of the following statements is true about the 2 vs 2 beach volleyball modality?

It is the most practiced in beach volleyball in its competition format.
It has been chosen as Olympic and included in the Atlanta 96 Olympic Games.
It requires great psycho-physical performance and high technical-tactical demands.
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.