Which Are the Main Barriers That Prevent, in Many Occassions

Which are the main barriers that prevent, in many occassions, to offer accesible and inclusive venues and events, in particular to spectators with disabilities and elderly people

A) Inadequate physical infrastructure
B) Lack of staff training
C) Senior managers´and staff´s perceptions and attitudes
D) Lack of understanding of needs of spectators
E) Lack of harmonised technical regulations