25. What does Bill Viola mean by the statement, "The medium is just the tool in this investigation."?
(A) The videotape installations are only a means to explore Bill Viola's ideas.
(B) Bill Viola's ideas can only be investigated through using advanced electronic equipment.
(C) Without electronic technology it is impossible for Bill Viola to have ideas to explore.
(D) Using videotape gives Bill Viola themes to investigate.