What evidence does welles provide during his press conference that supports his argument that he'd assumed his audience was familiar with the story line of the war of the worlds?

a. that h. g wells was unhappy that welles chose to recreate the story
b. that the show scared people, making people think they were under attack
c. that the story had been retold in several different formats before welles's broadcast
d. that the novel is about martians who launch an attack on planet earth